Nevada Nugget Hunters

rehab · Joined: 15 Aug 2006 Posts: 939 Location: NEVADA

Why Flotation Has Displaced Cyanidation at Cortez

Presence of Sulphide Minerals at Depth Resulted in Change of Mill Practice—
Much More Efficient Now

By J. O. GREENAN and F. M. BAGLEY
General Superintendent and MIII Superintendent, Respectively,
Consolidated Carte: Silver Mines Company, Carte:, Nevada

THE purpose of this paper is to describe briefly how a change in the character of an ore caused the local application of cyanidation to become expensive and inefficient, how the cyanide plant was converted to a flotation plant at low cost, and to discuss the principal advantages and disadvantages resulting from the change.

Early in 1927, the Consolidated Cortez Silver Mines Company had operated its 125-ton cyanide plant for about four years. The plant followed the usual ball- and tube-mill, counter-current decantation system, using Deister tables to make a small recovery of low-grade concentrate. The ore had been, in general, oxidized, and had consisted largely of low-grade stope fills that had accumulated for about 50 years. However, a sufficient quantity of silver-hearing minerals (mainly galena and tetrahedrite) was present to make a high extraction of silver economically impossible by cyanidation, as indicated by the accompanying tabulation.

In November, 1926, new orebodies were first encountered on the Arctic tunnel level, about 1,700 ft. vertically under surface. These orebodies, although partly oxidized, contained a much larger proportion of sulphide minerals than the ore previously milled. On the upper levels, galena and pyrite were the only sulphides visible, whereas on the Arctic level, galena, tetrahedrite, pyrite, and sphalerite were present in relatively great quantity.

The increased hardness of the Arctic ore promptly reduced the grinding capacity of the mill, and the in creased proportion of sulphides radically reduced the extraction of the silver. Incidentally, the lead and copper content of the ore had reached a point where it was desirable to attempt to recover these minerals also. Grinding capacity was increased by improvements in practice, but extraction decreased in spite of all efforts, and the rate of consumption of cyanide became prohibitive. The extraction of silver declined to a minimum
of 65 per cent; and the milling cost reached a maximum of $4.26 per ton.

Flotation tests had been started almost immediately after discovery of the new orebodies. Testing had been done by three nationally known flotation testing laboratories, by the local staff, and by the staff of a neighboring flotation plant, and in no instance were the results entirely satisfactory. In general, they indicated that a silver recovery of between 75 and 80 per cent might be expected, but that increased recovery might follow careful control and testing after full-scale operations had started. One report suggested that flotation be ignored for the present and that further efforts be made to improve cyanide practice. It was evident that the ore was far from ideal for flotation purposes, on account of the presence of oxidized minerals, among them plumbojarosite and (probably) argentojarosite. It appeared, however, that a milling cost of $1.50 to $1.75 per ton could be expected with flotation, with a somewhat increased marketing cost.

At this time, the arguments in favor of the adoption of flotation were the following:
1. Little ore was left on the upper levels. The new orebodies on the Arctic level were relatively high in silver-bearing sulphide minerals. Underground indications were that most of the future ore would come from below the Arctic level, with the chances in favor of decreased oxidation.
2. With flotation, a saving in milling cost of between $1 and $2 per ton could be expected.
3. Flotation could be expected to give from 10 to 15 per cent increased recovery of the silver, to a maximum of 80 to 85 per cent of the total silver content.
4. Flotation could be expected to recover galena and tetrahedrite and other lead and copper minerals in sufficient quantity to make a profit on these two metals.
5. Flotation would throw less load on the already overloaded power engines.
6. Flotation would eliminate all refinery costs.
7. The sequence of minerals with depth, already fairly well established in this mine, involves the possibility of a radical increase in the copper and zinc content, eliminating cyanidation as even a possible method, and pointing to selective flotation.
8. It seemed possible that flotation might allow coarser grinding, which would permit increased tonnage and lower costs per ton for the entire operation.

The arguments against flotation were:
1. Even the “sulphide ore” from the Arctic level contains a sufficient quantity of oxidized silver-bearing minerals, such as plumbojarosite (hydrated lead-iron sulphate) and argentojarosite, to make a good (90 per cent or over) silver recovery by flotation very improbable.
2. Since the entire output would be in the form of concentrate, which must be hauled 36 miles to the railroad point, hauling alone would greatly increase the cost of marketing, which would be increased further by freight and treatment charges.
3. Smelters would pay for only 95 per cent of the silver and gold in the concentrate, which would be reflected in increased marketing cost, whereas 100 per cent of the silver and gold in cyanide bullion is paid for by refineries.
4. One of the largest and most competent flotation organizations in the country, after fairly complete tests on a representative sample, recommended the retention of the cyanidation process.
5. Laboratory tests being regarded as undependable, it was uncertain whether full-scale operations would give a silver recovery even as high as the tests indicated. It seemed unlikely that results from the tests would, at best, be improved greatly.
6. No money was available to cover the cost of a flotation installation. In fact, for many months or even years, the operation had been conducted on so small a margin that each current month’s bills had been largely paid by the production of the succeeding months.
This argument seemed insuperable. Weighing the arguments, the conclusion was reached that flotation should be tried. The basic reason for this conclusion was that no 150-ton all-sliming cyanide plant could hope to operate at a profit, with 65 to 70 per cent silver extraction and a milling cost of about $3.50 per ton, except on fairly high-grade ore, and there was no reason to expect that the ore would average over 20 to 25 oz. This seemed to outweigh most of the arguments against flotation.
‘See The Cortez District Rejuvenated, Engineering and Mining Journal, Sept. 10, 1927.’

It was hoped that the cost of marketing could he kept to a minimum, by making a high-grade concentrate, thus reducing the tonnage to be shipped. The strongest argument against flotation was the first cost of the installation. Careful investigation of several of the leading types of flotation machines was made. The conclusion was reached that, for non-selective flotation, there would be little if any difference between them in the metallurgical results on Cortez ore.

From our standpoint, then, the important considerations were:
(1), low first cost; (2), low power consumption, and (3), low operating cost.

It was planned to install a flotation plant capable of handling 200 tons per 24 hours, as it was thought probable that the grinding capacity could be brought to that point. The company hoped that the machines could be placed inside the mill building already provided, to avoid additional housing cost, so the floor space required by the different types of machines was of importance.

Five different and popular types of machines were considered seriously. One of these, at least, would have required additional housing. Our own estimates of the costs of the various types, installed, were based on manufacturers’ figures, and ranged from $5,500 to $16,000. Average power consumption, likewise based on manufacturers’ statements, ranged from 12 hp. to 40 hp., and it was evident that the cost of upkeep of certain of the machines would be much greater than that of others. We finally decided that the Parker cell combined to the highest degree the features that were, from our standpoint, most desirable.

The principal argument against the cell was that it was relatively little known, although many Parker cells had been in operation for several years. In order to try it out, one cell was installed, and 110 tons per day was put through it for about three weeks, with an average recovery of 73.31 per cent, the resulting uncleaned concentrate containing 300 to 400 oz. silver. This was considered fairly satisfactory, in view of the heavy overload on the one cell. The entire 200-ton unit, consisting of three roughing cells and one cleaning cell, was then ordered.

In the mill was a small concrete floor, which, under cyanidation, had contained merely the precipitate press, a stove, and a desk. On this floor, which measured 19 ft. 6 in. by 30 ft., the four Parker cells were placed, on timber foundations. The cost of the installation was small, and, as much of the work was done by the regular mill crew, extraordinary expense was kept at a minimum.

From the classifier, which is in closed circuit with the tube mill, pulp is pumped to the first of the three roughing cells, which are in series. Tailing from the third rougher is passed over Deister slime tables, where a 100-oz. concentrate, relatively high in lead, is made. Froth from the first two cells goes to the cleaner, while froth from the third rougher is returned to the classifier, together with cleaner cell tailing. Froth from the cleaner goes to a Dorr thickener, is dried by an Oliver filter to about 11 per cent moisture, and is then sacked and shipped.
The total cost of the installation complete was $6,326. This included five Parker cells, two Wilfley pumps, pipe, valves, line shaft, belts, lumber, and complementary apparatus and supplies, and the labor of installation. In addition to the above, $2,122 was spent for supervision, flotation testing, and consultants’ fees. After the cells were well broken in, power consumption tests were made which showed that each cell consumed, including belt and line-shaft losses, 2.88 hp. when revolving at the normal speed of 60 r.p.m.

This figure of 11.52 hp. for the four cell units is very low, as it means 1.26 kw.-hr. per ton treated, on a 170-ton basis. The four cells have cost approximately $10 for upkeep in their six months of operation, having required attention only at the packing glands. No blower or other accessory apparatus has been needed.

The most interesting point, under flotation, is the relatively great importance of the marketing cost, which actually exceeds the cost of milling. Marketing includes all smelter deductions, treatment charges, freight, and hauling of concentrate. Smelters ordinarily pay for 95 per cent of the silver; in other words, there is a dead loss of 5 per cent of the entire silver output of the mill, which loss is not governed by the grade of the concentrate shipped nor by any other factor in control of the mill. If, for example, 4,000 tons are milled in a given month, and 100,000 oz., recovered, 5,000 oz., would not be paid for by the smelter. This loss of about $2,850 would amount to $0.71 per ton milled. It is important, therefore, to realize, in considering the advisability of replacing cyanidation by flotation, that, although a reduction in the cost of milling is ordinarily to be expected, together with an additional recovery of accessory minerals such as lead and copper, this saving may he offset to a large extent by the increased cost of marketing. Several methods by which the shipment of concentrate can either be avoided or reduced are being investigated at Cortez.

The Parker cell is a redwood box, normally 5 or 10 ft. Jung, with a bottom shaped Jike three sides of a hexagon. In this box is a centrally located rotating member, which consists of a series of 2x4’s mounted longitudinally on three cast-iron spiders, and spaced about 1 ½” apart, thus making tip a skeleton cylinder. The spiders are mounted on a shaft, which passes through a gland at each end of the box, the bearings being outside. Clear water is fed to the glands, a bushing around the shaft at the glands further protecting the shaft. Thus the only wearing parts are at the glands and the shaft bearings, aside from abrasion of the 2 x 4’s by impact against the pulp, which is negligible. In six months’ continuous operation of four cells, total upkeep material has amounted to 6 lb. of packing and two shaft bushings.

The rotor revolves at 60 r.p.m., and a series of baffles above this rotor encourages thorough aeration. On certain classes of Cortez ore, it has been found advisable to reduce aeration by closing tile openings between the baffles. The pulp enters at a corner of the cell, is picked up by the rotor, aerated in passing the baffles, is thrown on the surface of the spitz on one side, and thrown upward toward the surface on the other side, the mineral bearing froth overflowing the spitz weir. The particles of the pulp probably pass through this cycle many times before reaching the discharge opening at the opposite end of the cell. No difficulty is experienced in building up a good froth or in balancing the overflow on the two sides.

Flotation is responsible for the continuance of profitable operations at Cortez, and there is every probability that the next year will see a considerable increase in its efficiency and economy. If cyanidation had been continued, even with table concentration; it is improbable that operations could have been conducted at a profit. That the flotation plant paid for itself, in lowered milling cost and increased recovery during its first thirty days of operation, is a surprising fact.

F. H. Mohr, of McGill, Nev., acted as consulting metallurgist throughout the entire period of change, and J. B. Parker, of Salt Lake City, acted in a similar capacity after his cells had been chosen for the installation.

August 4, 1928— Engineering and Mining Journal

rehab · Joined: 15 Aug 2006 Posts: 939 Location: NEVADA

Magna Gold, in Lander County, Nev., Increasing Scope of Operations

OPERATIONS will be expanded to a three-shift basis during August at the property of Magna Gold Mines, situated in Lander County, Nev., 45 miles southwest of Austin, according to Thomas Varley, consulting metallurgist and secretary of the company, who is directing the development of the company’s holdings. During the 60 days ended July 6, hourly samples were taken of the heads and tailing at the ten-stamp Straub pilot mill used in treating the gold-quartz ore mined. Daily analyses of these samples, representative of 240 tons of mixed high- and low-grade ore milled in the period, showed that the heads averaged $8.45 and the tailing $0.80, the indicated recovery being 90.5 per cent.

Development of the property, which comprises 1,342 acres, including 160 acres of farm land, was begun by Magna Gold Mines in September, 1927, when the company was organized and acquired control of the area. From the start, all operations have been of a systematic nature and governed by thorough preliminary studies of the possibilities of the property. A 12,000-ft. east-west outcrop, varying in width from 8 to 30 ft., and dipping 80 deg. toward the north, was sampled at 200-ft. intervals by several engineers, and the average gold assay value obtained was $21.78. Subsequent tests of the ore, made at the Varley Metallurgical Laboratories, in Salt Lake City, showed that more than 90 per cent of the gold content could be extracted by amalgamation. The Straub pilot mill was then installed, and active development of the property started. A Wilfley table is now being added to the ore-dressing equipment, and, following further tests of the ore, the company plans to erect a large milling plant.

When acquired by Magna Gold Mines, the then existing development at the property consisted of three shafts—a 4x43-ft. main shaft, 125 ft. deep, and two others, 30 and 50 ft. deep, respectively—and 150 ft. of underground workings. The main shaft has since been enlarged to a 5x84 ft. two-compartment shaft, and extended to a depth of 200 ft. From this point 47j ft. of crosscutting to the north was done to reach the vein, where three drifts, one 40 ft. to the west, one 32 ft. to the north, and the other 10 ft. to the east, were driven in ore. A 100-ft. drift to the southeast was also driven from the bottom of the 50-ft. shaft. According to present plans, the main shaft will eventually be extended to a depth of 600 ft., from which point a crosscut will be driven to the vein, where drifts in opposite directions will then be started in the ore.

On the200 level about 300 ft. of drifting toward the west will be done to meet, at that depth, the extension of the high-grade ore found in the bottom of the 50-ft. shaft, which is 300 ft. west of the main shaft.

Operating on a three-shift basis, twelve tons of high-grade ore will be treated daily. It is expected that this ore will have a value of $18 to $20. Mechanical equipment used includes a 168-cu.ft. Gardner vertical compressor driven by a Fordson engine, and a steam hoist at the main shaft. At the camp on the property, situated three-quarters of a mile north of the main shaft, there is a fully equipped field laboratory, besides substantial and well-furnished boarding and bunk houses.

Numerous springs on the property furnish ample water for current requirements, and within a distance of three miles a supply adequate for even a 1,000-ton mill is available. Operations are in charge of H. F. Wilcox, superintendent. Officers and directors of the company, all of whom reside in Salt Lake City, are: A. E. Athas, president; H. L. Mulliner, vice-president; George W. Reid, treasurer; Thomas Varley, secretary, and consulting engineer; C. E. Athas, and R. E. Rudolph. Offices of the company are in the Continental Bank Building, Salt Lake City.
Joe Dandy Strikes Extensions of Orebodies on 400 Level

August 4, 1928— Engineering and Mining Journal 191

rehab · Joined: 15 Aug 2006 Posts: 939 Location: NEVADA

Buscaglia to Develop Claim in North of Goldfield District

At a point about one mile northeast of the Sandstorm mine, the original discovery in the Goldfield district of Nevada, what appears to be the northerly continuation of the Columbia Mountain fault is being developed by Benjamin Buscaglia. A shaft has been sunk 130 ft. and equipped with a hoist. Several tons of ore, said to average $30 in grade, have been taken from the 70 level, and development to prove the downward extension of the orebody is now under way. As this part of the district has not been worked to any great extent, development of the property is being watched with interest by local mining men.

rehab · Joined: 15 Aug 2006 Posts: 939 Location: NEVADA

NEVADA

Hans Hanson and Associates, holding a lease and bond on the Copper Queen mine, seven miles east of Luning, Nevada, have the property on a production basis and are making regular shipments of copper ore to a Utah smelter. A vein of sulphide copper has been opened in the property.
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Sol Camp and Henry Finkel of Tonopah, Nevada, leasing on the Stewart-Hanson copper property at Lone Mountain, have made their first shipment of 50 tons to the International smelter at Tooele, Utah. The shipment sampled 7 per cent copper and 10 ounces silver to the ton. They are now installing a compressor and expect to get out two 50-ton cars of ore each month. A good road has been constructed to Gilbert Junction on the T. & G. railway.
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On February 8, the B. and B. Quicksilver Company, operating in Fish Lake Valley, near Arlemont, Nevada, W. T. Childers, manager, increased its capitalization from $200,000 to $250,000 of $1 par shares. Shareholders have the right to acquire one share in the new issue for every four shares they now possess, and the income from the new sales will be used in the erection of a second rotary furnace and in paying off all outstanding indebtedness.
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Jameson and Paxson, who have a lease on the Tonopah Divide mine in the Divide district in Nevada, report gross production for the last six months of 1928 was $89,090.80 from 5,112 tons. There are a number of sub-leasers working in the mine, but the largest output was made by Jameson and Paxson. Royalties received by the company have not yet been reported. Production for the first half of the year was $62,628.46.
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The Manhattan Gold Mine. Company at Manhattan, Nevada, has made settlement of a two to three years’ disagreement by the purchase of adverse interests. The property has been idle during the dispute, but systematic development is to be restored under the direction of Thomas J. Lynch, president and general manager, 420 Thirty-fourth Avenue, San Francisco, California. The property comprises a group of nine claims, including the Sunday claim on which a few years ago 20 inches of ore assaying into the thousands of dollars in gold was uncovered during development. Financial arrangements have been completed and the stock has been listed on the San Francisco Mining Exchange.
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Arrangements are being made for a geological survey of the property of the Oro Amigo PIatino Mining Company in the Yellow Pine district, near Goodsprings, Nevada. Prior to its shut down the mine was opened by two tunnels, the No. 2 having a two-foot width of ore that has been followed for nine feet and carries .15 platinum, 30 per cent copper and $25 in gold per ton. The intermediate tunnel, driven on an iron deposit, is said to have developed a large body of soft quartz carrying low gold values. A 60-foot winze from this tunnel is claimed to have opened an ore body assaying 80 per cent copper besides other values.
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The Azurite Mining Company, adjoining the Oro Amigo property in the Yellow Pine district in Nevada, is said to be making shipments of 80 and 40 per cent copper ore. [rehab notes- a big hike, nearly 60 degrees, about a mile from where you park the truck. Located directly east of the Boss Mine.]
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The January cleanup of the milling plant of the Eldorado Rand Mining Company, near Las Vegas, Nevada, is valued at about $14,600, and it is anticipated that the next cleanup will be the largest since the plant has been in operation, according to Superintendent P. A. Keegle. Two shifts are working and the ore averages $24 in gold per ton. [rehab notes, Nelson NV.]
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The Reorganized Rosetta Divide Mining Company, January Jones, Reno, Nevada, manager, is to install a new hoist and headframe at the Whim shaft and sinking will be continued without delay. It is planned to sink on the five-foot showing that averages $25.78 per ton in gold and copper encountered at a depth of about 100 feet and to make connection with the shaft at the 200-foot level for ore extraction.
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The Southgold Mines ‘Company, C. H. Terrel, manager, Tonopah, Nevada, has practically completed plans for the building of a plant that can handle between 20 and 30 tons of ore daily as soon as a short tramway can be built and the equipment moved in. The Southgold property is about 60 miles east of Tonopah The veins vary in width from a few inches to 10 and 15 feet and the bulk of the ore will run from $8 to $15 in gold, with a small amount of silver. Development has not been done below a depth of 210 feet, but all indications are that the ore will extend farther.
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At a meeting of the stockholders of the Gold Zone Mining Company, held at Tonopah, Nevada, on March 12, the following officers and directors were elected: F. A. Burnham of New York City, president; Albert Silver of Tonopah, vice-president, treasurer and mine superintendent; Lowell Daniels of Tonopah, secretary, and Wilham Forman of Yuma, Arizona. The company is operating in the Divide district and at present is engaged in prospecting on the 600-foot level for the extension of the ore body on the 500 level, from which about 500 tons of ore have been mined and shipped. President Burnham has announced that on April 1 the company’s New York office will be closed and all records transferred to Tonopah, where Mr. Silver will be in charge of both the mine and office. President Burnham is retiring to his farm in Vermont.
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On March 17, the Nevada Coalition Mine Company, C. F. Wittenberg, general manager, began treating ore from the Schubert-Coop property, which adjoins the Keystone mine, in its War Eagle mill at Manhattan. The mill has been enlarged to handle 50 tons of ore daily and is being operated under lease. Drifts are being run east and west to determine the length of the oreshoot and it is said that there is enough to keep the mill operating for a long time. Matt Kane is mill foreman.
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The Pan American Mining Company, operating near Caliente, Nevada, has put on an additional shift. Gideon Snyder is president of the company.
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Ore shipments from the Pioche District, Nevada, for the week ended March 2, totaled 2,040 tons. The Bristol Silver Mines shipped 580 tons of copper ore and 640 tons of silver-lead ore, while the Combined Metals sent out 820 tons of silver-lead-zinc ore.
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William Woods and Jack Jordan, sub-lessees on the Fancher Mine in Georges Canyon, about 60 miles northeast of Tonopah, Nevada, have received returns of $85 per ton from their first shipment of 38 tons of ore. The consignment was a trial and the ore was very wet. Twenty tons more remain on the dump but are frozen. The ore came from a wine sunk from the tunnel level, where there is a vein of sulphide ore. It carried 85 ounces silver and .9 ounce gold and was treated at the Desert mill at Millers. The property is owned by William and Charles Fancher of Manhattan and is held under lease by five employees of the Tonopah Extension company, who expect to start work on their own account in about a month.
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Robert Hays Smith, president of the Carson Investment Company, has announced that settlement has been made with the Nevada Consolidated Copper Company, for alleged infringements on patents held by George Campbell Carson of Los Angeles. It is understood that the settlement was made out of the courts and covered the use of the patents since 1920. Nevada Consolidated has been given the right to use the patents in its refinery at McGill, Nevada, in the future.
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Bradshaw, Inc., Mark Bradshaw, Tonopah, Nevada, general manager, resumed operations on March 16. Nineteen men are employed. The plant averages a saving of 70 per cent of the values in the tailings.
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George Wardle, Sam Ragonovich, Ernest Cole and B. H. Thomas have been granted a lease in the West End and Ohio sections of the West End Consolidated Company’s Tonopah mines. The lease covers a section of the old workings above the 800-foot level. These lessees have been operating successfully in the West End mines for the past two years and now expect to operate certain blocks on their own account and sub-lease the rest of the ground. This area has produced many million dollars worth of ore in the past. Some of the stopes are more than 40 feet in width.
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The Hughes and Fanchini Mill at Silver Peak, Nevada, which has worked intermittently as a cyanidation plant for the past two years, has been taken over by the Lucky Boy Divide Mining Company, and will be reconstructed for flotation with Hardinge equipment, capable of handling 50 tons a day. While custom ores will be handled, the main purpose of the plant is to handle ore from the Mary Mine.
Morris Abertoli, who has been successfully leasing on the Mary for the past two years, will be in charge of the mill. Mr. Abertoli states that he has thousands of tons of $17 and $18 ore in his lease that can be mined with profit with a mill on the ground.
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A 30-ton flotation mill is being erected at Silver Peak, Nevada, by Fred Vollmar, Jr., to treat ores from the Vanderbilt, Calumet and NivIoc properties, all in charge of Mr. Vollmar. The Vanderbilt is an old property that has produced many millions, and is now owned by the Liberty Divide Mining Company.
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E. P. Jennings, leasing on the Champion mine, two miles east of Luning, Nevada, has shipped his second carload of ore to the Mason Valley smelter. The first car returned 2.77 per cent copper, 1.51 ounces silver and 40 cents in gold to the ton.
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Leasers working the Richmond-Eureka mine at Eureka, Nevada, shipped about 100 tons of ore during the week ended March 2. The ore was consigned to the Midvale smelter in Utah.
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The Treadwell.Yukon Company. Ltd., Willard Hales, superintendent, Tybo, Nevada, expects to have its 250-ton mill ready for operation early in May. Building construction has been completed and most of the machinery is on the ground. A few carloads of lumber and timbers remain to be hauled. W. H. Blackburn, 923 Crocker Building, San Francisco, is consulting engineer for the company.
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Production of the two Tonopah mills for the month of February was 170,470 ounces of gold and silver bullion, valued at $134,200. The Tonopah Extension contributed $84,200 to this total and the Tonopah Mining Company, $100,000.
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The West Mines Corporation, W. E. Sirbeck, manager, Goldfield, Nevada, has started work on the 100 level of the Gloria mine at Quartz Mountain. The objective, is to cut a well-defined hanging wall that has been followed in a winze sunk below’ the 50-foot level. A short raise has been driven from the 50-foot level and the face of the east drift driven from it is in three feet of milling ore.
The west drift from the raise is in an excellent showing of milling ore that is accompanied by two feet of shipping grade. George M. Lerchen is superintendent at the Gloria mine.
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The Nevada Consolidated Copper Company, McGill, Nevada, J. C. Kinnear, general manager, has declared a quarterly dividend of 75 cents a share, payable on March 30, to stock of record March 15 1929. This places the stock on a $3 annual basis. Three months ago Nevada Consolidated declared a quarterly dividend of 50 cents a share.

rehab · Joined: 15 Aug 2006 Posts: 939 Location: NEVADA

THE MINING JOURNAL April 15 1929

SOUTHGOLD MINES PLANS BIG DEVELOPMENTS ON EDEN CREEK
Recent developments on the property of the South Gold Mines Company at Eden Creek in Nevada have demonstrated the immediate necessity for a mill, and plans are now practically completed for the installation of a small plant early this year, according to Manager C. R. Terrell of Tonopah. It is planned to install a 20 to 30-ton plant as soon as a short tramway can be built and the equipment moved in.
The South Gold property is located 60 miles east of Tonopah and is said to be an Immense free-milling proposition. The ore is of good mill grade and some sensational values have been opened up, but the bulk of the ore will run from $3 to $15 in gold with very little silver. The veins vary in width from a few inches to as wide as 10 and 15 feet and the ore is a semi-crushed porphyry and quartz and is easily mined and milled.
Surface material will be milled first and it is estimated that there are 20,000 tons available. This material ranges in thickness from 4 to 18 feet and all the “fines” or screenings from the overburden are excellent ore, running from $3 to $50 per ton in gold. A screening plant is being installed and the fines will be washed and the gold recovered in a homemade amalgamator until a mill is available. During the last two years considerable gold has been taken from washing operations, and all sales brought $18.10 an ounce.
Other operators in the vicinity of the South Gold ground are installing equipment and preparing for deep development. Shipping ore is being mined at one point, only 70 feet from the South Gold line and a shaft will be sunk at least 100 feet. It is also probable that a second mill will be installed in the district before the end of 1929.

rehab · Joined: 15 Aug 2006 Posts: 939 Location: NEVADA

THE MINING JOURNAL APRIL 15 1929

NEVADA MINING NEWS

The Nevada Consolidated Copper Company paid $8,641,832 in dividends during March. This is its quarterly dividend paid at the rate of 75 cents a share.

The sale and merging of all mines at Round Mountain, Nevada, to a syndicate controlled by Thomas F. Cole of Pasadena and Charles V. Bob of New York has been consummated, and preparations for operating on a large scale are underway. The
merger includes the Round Mountain Mines, Fairview Round Mountain, Fairview Extension, Nevada Gold Development and the Round Mountain Homestake, comprising about 4,000 acres of lode and placer claims.
Engineers are making tests with a view to installing a 2,000-ton mill. Power shovels will be used in both placer and lode mining and some of the lode mining will be by open pit method. L. D. Gordon, long identified with Round Mountain developments, will be general manager, assisted by Charles J. Pearce as superintendent.

John G. Kirchen, general manager of the Tonopah Extension Mining Company, reports that four feet of ore have been opened on the 1,650-foot level. The heavy flow of water on the 1,880 has subsided and work has been resumed at that level. Now that so many of the veins are so far away from the Victor working shaft, some consideration is being given to sinking a shaft of three compartments to the 1,880 level.
Incorporation papers for the Tonopah Extension Mines, Inc., to succeed the Tonopah Extension Mining Company, have been forwarded to the secretary of state. The incorporators are H. R. Cook W. D. Hatton and Fred Cole. When incorporation is complete it is announced the following board of directors will be elected: John G. Kirchen, president; Fred L. Cole, treasurer; A. G. Raycraft, treasurer; H. H. Cooke, Homer Williams, H. D. Hatton, Hansen Jensen, W. D. Vandenburg and H. W. Stoddard.

The Kernick Divide Mining Company, J. A. McLaughlin, superintendent, Mina, Nevada, reports the station at the 150-foot level has been completed and crosscutting has begun. The formation at the bottom of the shaft carries some ore, but not of commercial value. A drift will be run along the vein to get under a good tonnage of mill ore exposed on the 38-foot level. This property is in Gold Canyon, near Sodaville, Nevada.

The Golden Eagle Mining and Milling Company is planning to reopen the Duluth mine and other bodies of ore, according to Secretary and General Manager Kay H. Beach of Fallon, Nevada. The organization is composed of Kansas City people.

The report of a rich strike in the Bull Moose mine of the Gold Ace Mining Company at Carrara, Nevada, has been confirmed. Samples from the new discovery assay from $1,000 to $8,692 from a several inch width of the material. The new find is opening up favorably with development. “Briz” Putnam is directing mine operations and G. H. Boggs of Los Angeles, California, is president and general manager.

The new 75-ton mill of the Chalk Mountain Silver Lead Mines Company at Chalk Mountain east of Fallon, Nevada, should be ready for operation by May 1, according to Manager E. M. Dawes. Foundations for the building and machinery are nearly completed and the mill is to be erected under contract by the Joshua Hendy Iron Works of San Francisco. It will be modern throughout and the process of milling has been worked out by J. B. lain and other engineers. The mine has been a producer of high-grade shipping ore for a number of years and there is still a large tonnage of mill ore in the stopes.

The Thompson smelter of the Mason Valley Mines Company closed down on April 1. The mines of the company, producing around 1,000 tons a day, continue operating and the concentrates are going to the American Smelting and Refining Company at Garfield, Utah.

The Nevada Quicksilver Mines, Inc., L. A. Friedman, manager, Lovelock, Nevada, has picked up an ore-shoot on the 850-foot level. It is five feet wide where encountered and is believed to be a new vein that was indicated 50 feet above. The ore is of a good grade and carries more antimony than does the high-grade deposit that the company has been mining, but the reduction process can readily eliminate this metal without interfering with operations.

The Silver Age Mining Company, William J. Walker, superintendent, Ely, Nevada, has shipped its first carload of ore to a Salt Lake smelter this season. The ore assayed 12 ounces silver, 24 per cent lead, .05 ounces gold and 6.9 per cent zinc and it is estimated that the shipment is worth $1,000. Systematic development is under way and regular shipments are expected throughout the season.

Two feet of quartz have been opened in a winze sunk from the tunnel level in the property of the Manhattan Gold Mines Company, Manhattan, Nevada. The gold occurs in fine grains in white quartz and is believed to be an offshoot from one of the veins that has produced heavily. Thomas 5. Lynch, 420 Thirty-fourth Avenue, San Francisco, California, is president and general manager of the company.

The Fluorite Producers, Inc., S. M. Summerfield, general manager, Mina, Nevada, has shipped two lots of fluorite to steel foundries on the Pacific coast. This deposit is near Broken Hills about 70 miles southeast of Fallon and until its discovery this mineral had to be imported.

The Argentena Consolidated Mining Company is working a full force at its property at Goodsprings, Nevada, and has placed its mill in commission. The mill is tuning out a fine grade of lead and platinum concentrates. Harry Lee Martin, 608 Title Insurance Building, Los Angeles, California, is president and general manager.

It is said that Smith Brothers and Company, leasing on the Anchor mine, near Goodsprings, Nevada, have struck a new body of ore, carrying high values in lead and zinc. The mill at the mine is in regular commission.

The Goldfield Consolidated Mines Company follows the general policy of leasing its properties at Goldfield, Nevada, and royalties from these operations both in the mine and on mill tailings have enabled the company to keep its workings open. The company performed a small amount of development, which did not result in the discovery of any important deposits of ore, neither has the work of the lessees opened any ore in advance of their extraction. The company has taken an option on mines near Field in British Columbia and active work is being carried on there.

Lowell Daniels, secretary of the Gold Hill Mining Company has notified the stockholders that a meeting will be held on April 9, to amend the articles of incorporation and to confirm the option granted to J. K. Kitto, trustee of the Gold Hill Syndicate of Philadelphia, to purchase all the assets and real estate of the company.
The circular sets forth that the trustee will incorporate the Gold Hill Development Company under the laws of Delaware, with a capitalization of $2,000,000, divided into $1 shares, non-assessable. About 720,000 shares of this corporation will be exchanged for stock on the old company on a share-for-share basis. If the option is exercised the trustee will advance $100,000 about May 1, 1929, to carry on operations. As soon as developments justify a milling plant will be installed.
Mann Everson, for several years foreman with the West End Consolidated, has been appointed superintendent and three shifts are working. The shaft has reached a depth of 275 feet and considerable pay ore has been disclosed in drifts on the 150 and 250 levels.

It is understood that officials of the McCoy Nevada Gold Mines Company will visit the company’s property at Battle Mountain, Nevada, for the purpose of considering the construction of a mill to treat the ore on the ground. Assays from the 100-foot shaft show values as high as $500 per ton and interest in the property has been heightened by the recent strike made on claims owned by Charles Brankey and Ernest Chatelle about one mile north of the McCoy-Nevada property. Harry W. Bower of Los Angeles is vice-president of the company. B. P. Howell is mine superintendent.

The Harmill Divide Mining Company has hoisted about one carload of ore carrying from $115 to $120 per ton in silver and lead from the 50-foot level of the winze sunk below the 800-foot level in its property in the Montezuma district in Nevada, according to Gerald B. Hartley, president and general manager, 112 East Second Street, Reno. Owing to the condition of the roads, no attempt is being made to ship this ore at the present time.

The Nevada Consolidated Copper Company, J. C. Kinnear, general manager, has just completed a new stack 350 feet high at its McGill plant in Nevada. This chimney is 20 feet in diameter inside and is the highest chimney at the plant. It is of acid-proof lining, which is only four inches thick but separated from the main shaft by a two-inch air space. The foundation is reinforced concrete, 60 feet in diameter at the bottom and is in the ground. 15 feet. Construction was started last October and required 40 carloads of gravel 7 carloads of cement and 50 tons of steel reinforcing. The company has added five new locomotives to its rolling stock.

Stock control of the Black Forest Mining and Smelting Company and the Missouri Monarch Mines Company, owning the Spruce Monarch group of mines in Elko county, Nevada, has been purchased by the Big Missouri Mining ‘Company and associates, according to Duncan MacVichie of Salt Lake City, Utah, consulting geologist. Operations are being carried on in the Black Forest group at the east end of the group as well as in the Spruce Monarch at the southwest end.
The upper Black Forest tunnel is being extended into the formation, where an ore body 400 feet in length and 15 feet in width has been exposed. A shaft will be sunk in the Empire Claim, also. A shaft is being sunk from a point 1,600 feet from the face of the Spruce Monarch tunnel and the tunnel is being driven ahead to cut the Thelma and the West Fault. The Big Missouri Company is also operating near Stewart, British Columbia, and maintains offices in the Clift Building, Salt Lake City, where Mr. MacVichie may be addressed.

The St. Joe Consolidated Mines Corporation, which holds control of eight claims six miles from Wallace, Idaho, and the Haywood group of 18 claims in the Silver City mining district in Nevada, has outlined a development program for its properties. Financial support is to be given by New York and Florida capitalists-Charles Oster of New York City is president of the corporation and E. S. McCurdy, 576 Mills Building, San Francisco, is secretary.
The Idaho property is opened by four tunnels. The No. 1 tunnel has several ore-shoots that average $35.84 per ton in lead, silver and gold and the No. 4 tunnel will gain a depth of 900 feet on this vein.
The Nevada property has been opened by a 485-foot incline shaft and $1,950,000 is said to have been taken from the workings. It is said that there is sufficient ore to justify the construction of a milling plant, which the management is prepared to build and in addition, search for ore will be continued to depth.

rehab · Joined: 15 Aug 2006 Posts: 939 Location: NEVADA

THE MINING JOURNAL JUNE 30, 1929

NEVADA

A rather extensive program has been announced by N. H. Getchell, president and general manager of the Gold Circle Consolidated Mines Company, operating near Midas, Nevada. The Elko Prince shaft is to be continued from the 900-foot level to a depth of 1,200 feet and the Grant shaft sunk from the 225 level to the 425. Water stands in the Link shaft at a depth of 300 feet and is to be lowered to the 500-foot level to permit the development of the lower levels of the shaft. Some new machinery will be necessary, including a 400-horsepower Diesel engine. James Pike is mine superintendent and Victor Jacobson is mill superintendent at Midas.
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The Lost Spanish El Dorado Gold Mining Company plans installing a flotation mill, concentrators, hoist and compressors at its property, near Mountain Well, according to General Manager E. I. Connell, P. 0. Box 21, Fallon, Nevada. A small force is engaged at the present time in developing a new strike of rich sylvanite ore made in La Platte Canyon. This is a gold-silver-lead proposition.
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There is some talk of the resumption of operations on the property of the Montezuma Silver Mines Corporation, near Goldfield, Nevada. An 800-foot tunnel is proposed which will open the ground below the old workings, which has produced a large tonnage of silver-lead ore. E. S. Giles is general manager of the organization and Arthur B. Brown is assistant.
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The Appian Mine. Company, H. W Hickel, president, Elmcourt, Newlands Heights, Reno, Nevada, set June 20 as the date for starting the treatment of ore in its new flotation mill. The plant is designed to treat 50 tons of ore daily and engineers estimate 25,000 tons of ore in the glory hole workings above the tunnel level that will average $11 per ton. The Christensen shaft, sunk on a vein paralleling the glory hole vein, is to be equipped with an electric hoist and sunk to greater depth. About 400 tons of ore from this shaft have been shipped direct to the smelter, one lot, carrying values of $70 per ton.
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At the annual meeting of the stock’ holders of the Hawthorne Mines, Inc., Hawthorne, Nevada, it was voted to consolidate with the Lucky Boy Consolidated Mines Company, which controls the former organization. The officers and stockholders elected for the coming year Include: President and General Manager J. H. Miller, George S. Green, D. M. Buckingham, A. J. Bogard, Jr., and A. M. Lasher. F. E. Buckingham was elected as secretary. A lease has been granted to the New El Dorado Gold Mines Company on the McCormick section of the Hawthorne property.
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The plant of the Golden Glow Mining Company, near Gardnerville, Douglas county, Nevada, has shut down temporarily on account of high water, according to President R. N. Lake. The company has 100 acres of placers above Horseshoe Bend on the Carson River and has been successful in the recovery of gold values. The gravel averages 50 cents a yard and with the dragline scraper and equipment has been handling from 75 to 100 yards a day. This is a California corporation.
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The tunnel being run in the development of the Silver Coin mine, owned by L. K. Kramer of Golconda, Nevada, is passing through the edge of an old hot spring and the formation is panning cinnabar. The objective is a gold and silver showing six feet wide at the surface and shipping will start as soon as it is reached. No production has been made since February, 1929, on account of the mine being blocked with mill ore.
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The Golden Eagle Mining and Milling Company, Kay H. Beach, secretary and general manager, Fallon, Nevada, is completing an ore road from the mine to the mill and will start milling as soon as enough ore is opened to make a long run. Gold and silver are the principal minerals. Gas and semi-Diesel power of 100 horsepower capacity are available for development and for operating the milling plant, which is of 50-ton daily capacity. The working force varies from two to 15 men.
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The Grey Eagle Mining Corporation, H. M. Gilbert, general manager, Beowawe, Nevada, plans installing a concentrating mill at its property in Lee Canyon. Some new machinery has been installed recently in the development of ores, carrying gold, silver, lead and bismuth. This property is owned by the same men as the Nevada Mexico Mining Corporation, but does not have the same officers. Franz Altmeyer of Chicago is president, and A. C. Hickman is mine manager.
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The Tri’O-Lite Product. Company has added two driers to its equipment at Vivjan, Nevada, and is mining, refining and distributing a non-metallic ore, known as kieselguhr. Twenty-four men are working and 24 tons of material are handled every 16 hours. The operating officials are C. T. Hurd of Carlin, Nevada, president and general manager; Len Hurst, mine superintendent, and E. E. Kedding, mill superintendent.
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A unit of 150-ton daily capacity is to be added to the 100-ton plant of the Premier Mine. Corporation of Nevada, according to President and General Manager Walter C. Bracking, P. O. Box 158, Reno, Nevada. Regular development work will be carried on, through tunnels, drifts, raises and glory holes. Fifteen men are engaged in mining and mill construction. George S. Cade, Canon City, Nevada, is superintendent of both mining and milling.
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A shaft is to be sunk in the Pearl claim of the Diamond group of mines at Silver Peak Nevada, according to Oscar Olsen of Goldfield, one of the three owners of the group. The property comprises 12 patented claims and 16 locations.
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According to President and General Manager H. C. Nicholson, a new ball mill will be installed at the property of the Nicholson Mining and Milling Company, near Ely Nevada. The company is developing the shaft and tunnel method with a small force of four men.
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The Gold Ace Mine Company, G. H. Boggs, general manager, Beatty, Nevada, has sunk its double-compartment shaft to its objective at a depth of 60 feet, the vein being from eight to 10 feet between walls. A six-inch streak is “picture rock,” according to Mr. Boggs, and the remaining width assays from $4.80 to $20.60 per ton in gold.
Complete Mat-O-Gold equipment has been installed to replace the old method of amalgamation. With this equipment, nearly all of the gold and concentrates are recovered and the cleanup from the Mat-O-Gold equipment is being treated by barrel amalgamation with a recovery of 90 per cent of the value of the ore treated.
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The Yellow Pine Mining Company, Herbert Shear, general manager, Goodsprings, Nevada, is contemplating the erection of a 100-ton flotation plant to recover lead. Later, an oxide plant will be built for reducing the carbonate ores to zinc oxide. Nineteen men are employed and production is mainly lead and zinc. Mining is conducted through the cooperation of G. J. Knight, 611 Financial Center Building, Los Angeles, president; H. B. Whitman, superintendent; J. O. Kemple, master mechanic, and C. N. Magnuson, secretary and auditor.
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Assessment No. 4 has been levied on the stock of the West Mines Corporation, Goldfield, Nevada, at the rate of 2 cents a share and payable on or before July 1, 1929. Proceeds will be used in further development of the mine at a lower level. The discovery in the Gloria mine in the early part of the year, and which has been followed 100 feet with varying widths of ore, has not been sufficient to prove the property.
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Beruatto, Franks and Morris, lessees at the Brougher Divide property, near Tonopah, Nevada, are shipping two carloads of ore that has been opened in a raise above the winze sank from the 176-foot level, 800 feet west of the Combination shaft. This is the first production since last December, when a rhyolite intrusion in the raise appeared to cut off the ore. Eddie Gehringer, operating the old Sanger lease west of the shaft, is delivering ore for shipment, and Walter Ross has his ninth carload of ore ready for shipment from his sub-lease in the winze from the 176 level, directly beneath the three B raise.
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The Black Mammoth Mining Company, Fred Vollmar, Jr., manager, Silver Peak, Nevada, has taken over the Morris Albertoli lease on the Mary mine and control of the Black Mammoth, now nearing completion. Mr. Albertoli will remain as mine superintendent for the Black Mammoth Company and Fay and Frank Hill will have charge of the mill. The plant was designed by Albert Silver, metallurgist for the Tonopah Belmont and the Gold Hill companies, and by use of the flotation process can treat 50 tons of ore daily, making a recovery of 90 per cent of the assay value.
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The Belmont Uncle Sam Mining Company, Charles Meyer, secretary and manager, 188 North Virginia Street, Reno, Nevada, has entered the hanging wall of the vein on the 400 level of the Keyes Mine in Six Mile Canyon by driving to the north. The drift is in four feet of ore, averaging $80 per ton, according to President C. L. Richards, who, with other company officials, visited the property. Mr. Richards also stated that the workings are hot and the air is none too good, but better ventilation is to be provided.
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Charles H. Segerstrom of Sonora, California, has purchased the Silver Dyke and Tungsten property, near Sodaville, Mineral County, Nevada, and with Ott F. Heizer are getting development started. A compressor and pump are being installed and 1,700 feet of pipe are being laid to a well below the mine. Contracts will be let oh driving a 1,000-foot tunnel to tap a ledge highly productive during the war and on a 750-foot crosscut tunnel to reach the downward extension of a rich ore-shoot found by Alex Hanson.
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The report that the Nevada Gus group of five mining claims, two miles northeast of Olinghouse and four miles northwest of Wadsworth, Nevada, has been acquired by the California Mother Lode Mining Company, has been confirmed by J. E. Miller, 420 Clay Peters Building, Reno, who is vice- p resident and general manager for the California Mother Lode.
A vertical shaft was sunk 200 feet on the East vein and a 235-foot crosscut driven from the bottom when work stopped. Ingalls, a former operator, drove a 1,400-foot tunnel into the andesite, roughly paralleling the vein. The mine workings are in good condition, equipped with a hoisting plant and other equipment and accommodations for 12 men.
An assay from a small veinlet on the footwall of the ledge in one of the tunnels returned 400 ounces silver and 23.92 ounces gold to the ton, in the face of a crosscut driven west from the 200 level of the shaft, according to Mr. Miller.
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J. C. Bradley, Charles A. Hock and other Los Angeles, California, men, have organized the Shiloh Mining and Milling Company, for the development of the Eureka or Shiloh group of mining claims, 45 miles southwest of Goldfield, Nevada. Two tunnels and two shallow shafts have opened the property, said to contain commercial deposits of ore and plans are being made for a concentrating plant. There is plenty of timber and water for domestic and milling purposes.
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The Security Mining Company, N. H. Getchell, Betty O’Neal, Nevada, general manager, is sinking a new shaft to a depth of 300 feet in the hanging wall of a vein in its property in the Gold Circle district. The incline shaft is down 250 feet and water stands within 75 feet of the collar. The road to the mine is being repaired and the machinery overhauled. No work has been done at this mine for about 14 years, but it is estimated that several thousands of dollars worth of ore are in sight.
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The Bristol Silver Mines Company, E. H. Snyder, manager, has announced its intention to sink its three-compartment incline shaft in the Pioche District in Nevada, from the 1,700 level to a depth of 2,200 feet, and will start drifting at that depth to cut the fissure productive above. Stoping is being done on the 1,200-foot level and drifting has been started on the 1,550. The new 360-horsepower Diesel engine has increased power capacity to 840 horsepower, an ore bin is nearing completion, and other betterments are planned. J. H. Buehler is superintendent at Pioche.
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The Seven Troughs Extension Mines Company is engaged in the construction of a milling plant, near Lovelock, Nevada, for the recovery of gold and silver from its ores. Ten men are engaged in mining and mill construction, under the direction of G. W. Warmoth, vice-president and general superintendent, Box 8, Lovelock.
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Production of Tonopah’s two mills for the month of May was 167,710 ounces, valued at $119,800. Of this amount the Tonopah Extension contributed $26,800 and the Tonopah Mining, $93,000. With the present low price of silver, the Tonopah silver mines axe having a hard struggle, relieved somewhat by the fact that Tonopah ores carry an average of 1 ounce of gold to each 100 ounces of silver. Outlying camps, tributary to Tonopah, such as Manhattan, Round Mountain, Silver Peak and Tybo, are not affected by the declining price of silver, as all, with the exception of Tybo, are gold producers. Tybo production is lead and zinc.
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The Gold Hill Development Company, operating at Round Mountain, Nevada, H. A. Johnson, general manager, is concentrating development on sinking the shaft from the 400-foot level to a depth of 500 feet. Fourteen men are employed.
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Bradshaw, Inc., Mark Bradshaw, general manager, Tonopah, Nevada, treated approximately 82,000 tons of slime from the Goldfield tailings pond during May and reclaimed about $27,489.44. The grade of material was lower than in April, but a good profit was made.
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It is understood that the Boulder Dam Placers, Inc., Mark Musgrove, 1185 Subway Terminal Building, Los Angeles, California, has purchased machinery for the pumping unit of the gold recovery plant at its property, near Las Vegas, Nevada. The machinery includes a dragline scraper outfit, flume and sluice boxes. An order has also been placed for an 80-foot launch for use in connection with the company placer mining operations, up and down the river a distance of about 20 miles.
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Nevada Consolidated Copper Company declared its regular quarterly dividend of 75 cents a share, payable June 20, to stock of record June 14.

rehab · Joined: 15 Aug 2006 Posts: 939 Location: NEVADA

JUNE 30 1929 THE MINING JOURNAL

MINING POSSIBILITIES OF CLARK COUNTY BEING SURVEYED

Stimulated by the assurance that the construction of the Boulder Dam is practically an established fact, Clark County, Nevada, is swarming with engineers representing large mining and industrial concerns, it is reported. Metal mining conditions in that section, as well as the possibilities in the non-metallic line, are being made the subject of careful and exhaustive surveys.

Of special interest, in this connection is the attention being paid to the existence and extent of deposits of manganese ore, the Manganese Producers Association, with its consulting engineer, Alvin B. Carpenter, having made a thorough investigation of the county, gathering data regarding the deposits of this material.

The probable and possible tonnage of the metal producing mines of the county are also being given careful consideration, preparatory to the ultimate construction of reduction plants for the economic treatment of metal ores, either at Goodsprings, or Las Vegas. The ores of the district classify principally as lead, silver, zinc, copper and gold, with a frequent occurrence of the rare metals as well as non-metallics. The metal producers of the Yellow Fine district include the Yellow Fine, the Argentina, Potosi, Oro Amiga, and other mines of note.

rehab · Joined: 15 Aug 2006 Posts: 939 Location: NEVADA

THE MINING JOURNAL 9 30 1929

NEVADA

According to the State Tax Commission, the B. and B. Quicksilver Company, operating near Mt. Montgomery, west of Tonopah, made a gross yield of $78,971.16 for the first six months of 1929. The net proceeds were $29,518.98, as compared with $20,189.87 during the corresponding period in 1928. Peter Buol of Los Angeles, is president of the company.
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The old Calavada Mine near Luning, Nevada, which was recently taken over for taxes, by Mineral County, has been leased to A. G. Hachman of Luning. He has already shipped one 30-ton carload of ore that is expected to run 10 per cent copper. The ore came from an old tunnel, where a 12-inch streak is exposed that runs from 10 to 12 per cent copper.
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It is understood that the Eastern Iron and Metals Company, Salt Lake City, Utah, has started dismantling the mill and smelter of the Mason Valley Mines Company, at Thompson, Nevada. The Bluestone flotation mill has a capacity of 1,100 tons of ore per day and was operated for three years until the company closed down on April 1 of this year.
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The Goldfield Deep Mines Company, A. I. D’Arcy, president and manager, Goldfield, Nevada, has purchased a storage battery locomotive, and will put it in operation as soon as the track is strengthened. Ore up to this time has been moved by manpower. The locomotive can haul six cars, and the track will be required to carry 10 tons, instead of one, as formerly. New ties are being laid and the ditch is being repaired to keep it free from water. Elmer Hurt is general superintendent and Corrin Barns is chief geologist for the company. An average of 80 men are working.
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Announcement has been made that the Gold Hill Mining Company, Gold Hill, Nevada, has opened high-grade milling values in gold on the 400-foot level and about 42 feet from the shaft. The ore averages four feet in width, and will supply a large tonnage of feed for the proposed mill. Several improvements have been made by the Gold Hill Company, including four miles of power line, and a 75-horsepower hoist. H. A. Johnson of Tonopah is general manager of the company, and R. E. Tanner is mine superintendent.
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M. P. Revsbeck of Fallon, Nevada, has moved the slow speed Lane mill, from the old camp of Rawhide to Sand Springs, to treat ores from the Dan Tucker Mine, upon which he holds a lease. About 250 tons have been hauled from the mine to the mill, and considerable ore is said to be blocked out. Gold is the principal mineral.
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Production of Bradshaw, Inc., Mark Bradshaw, general manager, Tonopah, Nevada, during August was $30,929.95. The July output was $88,858.52. Decrease is said to have been due to electrical storms, which caused an interruption of power on four occasions. The tailings yield a little higher than $1 in gold per ton, and it is estimated that there are enough to supply the plant for four years. With the advent of cool weather, production will decrease on account of the solution not working as well as it does in warm weather. On this account, the plant operates but seven to eight months a year.
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The Castle Peak Quicksilver Company, operating 19 miles northeast of Reno, Nevada, has been treating ore in its new rotary furnace, and at a capacity of 40 tons daily, expects to recover about 150 flasks of quicksilver a month. H. F. Loufek of Reno is president of the company. Development of the mine was started in April, 1928, and since that time approximately 50,000 tons of ore, averaging 12 pounds of mercury per ton, have been developed. An additional tonnage of ore, running in the neighborhood of six pounds of quicksilver per ton, has been opened in raises from the main workings, but is not blocked out.
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Horace A. Johnson, manager of the Tonopah Mining Company, Tonopah, Nevada, reports 3,000 tons of ore were extracted during the month of August. This is the greatest production in any single month in six years. “Ore in the old Mizpah Mine continues of a good grade,” said Mr. Johnson. “The ore reserves and the prospects for continued development and production are as great, if not greater, than at any time in recent years.”
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Plans of the Gold Hill Development Company at Round Mountain, Nevada, call for 1,000 feet of drifting on the 225-foot level and the same footage on the 400 level, according to H. A. Johnson of Tonopah, general manager. The objective of development is to open up enough ore to justify the erection of a mill of large capacity. A good grade of mill ore has already been opened up on three levels.
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A sample of ore from the winze being sunk by the Caliente Cobalt Mining Company, Caliente, Nevada, William S. Lawrence, manager, assayed 85 ounces silver and $6 gold to the ton. The winze has reached a depth of 27 feet below the tunnel level, or 70 feet below the surface. Aggressive development is planned on a number of strong showings.
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Harry Springer of Mina, Nevada, has shipped seven carloads of gold ore from the Mary Ann Mine in the Douglass District, to the smelter. He intends to install a hoist, and will sink a shaft to a depth of 200 feet below the tunnel level.
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B. T. Lyons of Mina, Nevada, president of the United Mining and Milling Company, announces that San Francisco and Los Angeles people, will furnish the money to build a 50-ton custom mill, near the springs at Sodaville, eight miles from Mina. The cyanide process will be employed.
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A good showing of cinnabar is reported in the Kane property in Dunlap Canyon, 11 miles east of Mina, Nevada. The property is under lease to A. I. Mills, who is operating a retort and producing about one flask of quicksilver a day.
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The Chalk Mountain Silver-Lead Mines Company is adding another Deister Table, and a classifier, to its concentrator, and will have the plant ready for operation by September 15, according to President and General Manager E. M. Dawes of Fallon, Nevada. Upon the installation of this machinery, a concentrate, carrying from 40 to 45 per cent lead and 18 to
30 ounces silver will be made. The property is at Chalk Mountain, 85 miles south of FalIon, where the main office is located.
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High-grade gold ore has been opened in a stope from the tunnel level in the Spade and Dot Mine, at the mouth of Galena Canyon, south of Battle Mountain, Nevada, according to G. D. Mathewson, manager. Specimens are reported to run as high as $1,000 per ton.
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One of the most successful quicksilver developments in Western Nevada at the present time, is that of McKinney and Good, near Arlemont, Nevada. A small rotary furnace is being operated, producing an average of three flasks a day, treating 20-pound ore, rejects sorted out. The high-grade is treated in retorts.
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The directors of the Missouri Monarch Consolidated Mines Company, met at the Salt Lake City offices, in the Clift Building, to check over plans for an 80-day development program, presented by Managing Director Duitcan MaeVichie. Among those present were S. T. Gregory of Tacoma, Washington; Frank D. Oakley, Tacoma, secretary; and W. M. Archibald, manager of mines for the Consolidated Mining and Smelting Company. Application for building a 24-mile branch railroad between Ventosa and the mines, is being made to the Interstate Commerce Commission.
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The Nevada Standard Mining Company is completely rehabilitating its old concentration and cyanide mill, at Cherry Creek, Nevada, and is installing flotation machinery. The initial unit will have a capacity of 50 tons daily and its machinery will be thoroughly tested on the ores before any attempt will be made to increase its capacity. The old power plant is being supplemented by a new Diesel engine and the old gas plant will be used.
During mill construction and other improvements the Star tunnel was re-timbered where necessary and ore chutes built. Work is to be started on the Imperial-Exchequer vein. L. E. Foster, Cherry Creek, Nevada, is trustee.
=-=-=
The bullion production of the Tonopah Extension Mill, for the month of August, WAS 59,960 ounces, valued at $41,300. This is the largest production in ounces since last January.
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Alex. McMath and H. McKay, leasing on the Homestake company’s estate at Gilbert, Nevada, have received returns of $34.50 per ton on a shipment of 49 tons of gold ore consigned to the Desert Mill of the Tonopah Mining Company. This is their second carload shipment since taking over the lease last April. The first shipment, consisting of 40 tons, returned $54 per ton. The ore comes from a 30-foot depth from the old Midas tunnel.

rehab · Joined: 15 Aug 2006 Posts: 939 Location: NEVADA

THE MINING JOURNAL OCTOBER 15 1929

NEVADA

The Nevada Consolidated Copper Company, operating in Nevada, Arizona and New Mexico, disbursed a dividend of 75 cents a share, quarterly. The total payment was $3,642,986.
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At Tybo, Nevada, one shift is milling ore at the rate of 400 tons daily. About 70 tons of concentrates are hauled to Tonopah, daily. Mine development is pushed ahead of milling and the fourth Fageol truck has been purchased in view of milling during another shift. W. E. Hales is superintendent at Tybo; A. R. Hammond is mine foreman and H. M. Lewers is mill foreman.
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Louis McCrea and Frank M. Otto, who recently secured a lease on the Booth Mine at Wahmonie, Nevada, [as in NRDS, Nevada Test Site] are reported to be sacking $75 ore on the 150-foot level. It is said that Otto, was working in mine, when it was being operated by the Booth Company, and knew of a streak of high grade. With McCrea, he leased a block of ground 200 feet square with the privilege of working through the 600-foot shaft.
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The first shipment, consisting of a little over 54 tons, made from the Gilbert Mammoth Gold Mines Company’s lease on the Mammoth Mine, at Gilbert, returned $67.75 per ton, $61.60 of this being in gold. The Gilbert brothers, Fred, Herman and Logan, the original discoverer of the camp, control the company. “We have been shipping ore opened on all levels,” said Fred Gilbert, “but for the present about one carload every 10 days is about the best we can do, but later expect to do better.”
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The new furnace of the Castle Peak Quicksilver Company, near Virginia City, Nevada, has been adjusted to suit the ore and is working nicely. During a recent 20-day period, 110 flasks of quicksilver were shipped from Reno to San Francisco. Some 23-pound ore was opened in extending a stope north of the ore pass, above the south drift. It is being mixed with low grade to bring mill heads to between 10 and 12 pounds. Estimating costs of production at $45 per flask, the net operating profit should be around $12,000 a month. Arthur Schumaker is furnace superintendent and C. N. Shaffer is mine superintendent.
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It is understood that in drifting west from 104 crosscut, and 35 feet below the croppings, the Round Mountain Mining Company, L. D. Gordon, president, Fallon, Nevada, has followed 55 feet of ore that averages higher than $5 a ton. Exploratory work is being done on both placer and lode property. Due to lack of water, this has been a short season for hydraulic operations. Production up to the present time is $33,000 from 22,500 yards of gravel.
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George Lerchen and John Berlin have leased the Illinois Mine at Lodi, south of Quartz Mountain, Nevada, and are working lead-silver ore on the 200-foot level. This property was operated by the late J. C. Gorin.
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The B. and B. Quicksilver Company, E. J. Bumstead, superintendent, Mt. Montgomery, Nevada, has contracted with H. W. Gould and Company, in San Francisco, for the installation of a Gould 4x60-foot rotary furnace, dust chambers and condensing system and an 80-horsepower Fairbanks-Morse Diesel oil engine and electric generator. The engine will be direct connected with a generator to replace the steam plant now in use. A 5x50-foot rotary furnace has been in operation at the mine for about a year, with the exception of the month of August.
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The 50-ton mill of the Nevada Standard Mining Company, L. E. Foster, trustee, Cherry Creek, Nevada, will be ready for operation upon the arrival of a 200-horsepower motor, which has been shipped from the east. This is the first unit of a larger plant and is equipped with flotation machinery. Diesel engines and an electric generator will furnish power for operating the machinery in both the mine and mill.
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The Western Nevada Mines Company, C. J. Carpenter, general manager, Dayton, Nevada, is sinking a new vertical three-compartment shaft in its property at Como, Nevada, to a depth of 500 feet, for the development of two parallel veins, the Surprise and the Sundstrom, about 700 feet apart. Some development has been done from the 400-foot level of the incline shaft in the Surprise mine.
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H. L. Slosson, Jr., 333 Kearney Street, San Francisco, California, president of the Chollar, Savage and the Gould and Curry mining companies, owning property at Virginia City, Nevada, is making arrangements to drain the entire American Flat District. He will work through the Overman shaft, 1,600 feet deep, and connected at the 1,200, 1,400 and 1,600-foot levels with the Sutro Tunnel South Lateral, by means of drifts through the Crown Point, Belcher and the Yellow Jacket workings. The water can be handled by gravity through the Sutro Tunnel. A hoist has already been purchased and electric power and water connections are ready to start work.
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The Pan American Mining Company, George E. Coxe, general manager, Herald Building, Caliente, Nevada, has sunk the main shaft in the Stella Property, to a depth of 642 feet, and is raising from the 630-foot level, to determine the thickness of the ore body at that width. At the 500-foot level the ore was 28 feet thick. Eighteen men are working at the Forlorn Hope Mine in One Wheel Canyon. This is believed to be the same mineral belt as the Stella Workings are on. A power line is being built. John Valenti, who is working the Mountain Lion mines, has shipped a test lot of ore to the Murray smelter.
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Alex. Boyle has secured a 25-year lease on the W. G. Hoffman property, about 35 miles from Garderville, Nevada, and a mile from the Kit Carson Highway. A shaft has been sunk from the bottom of the gulch on a promising showing and either wall is in blue gouge, the ore being three feet wide and averaging as high as $89 a ton. Enough water and wood is close by for mining purposes.
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The Argentum Mining Company, F. G. Grube, general manager, 2401 Sacramento Street, San Francisco, California, is developing mining property at Candelaria, Nevada, formerly operated by the New Candelaria Mines Company, John C. Rodder, manager. The Argentum Company erected a new gallows frame, over the Northern Bell shaft, and installed a 100-horsepower hoist and compressor. The shaft was sunk to the 1,900-foot level and a drift is now within 160 feet of the extension of ore opened on the 1,700-foot level, when the mine was under the management of Rodder. The 1,900 workings are very warm, but this condition is partly relieved by the installation of a No. 7 Buffalo blower. Two shifts of four men each are working.
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The Raymond Van Ness Mining Company, C. E. Van Ness, manager, Tonopah, Nevada, is getting ready to install a 40-ton rotary furnace at its property in the Spanish Belt District. Power for the plant and electricity for the camp will be generated by two Diesel engines.
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The Consolidated Coppermines Corporation at Kimberly, Nevada, is producing at the rate of 2,500,000 pounds a month, according to President Smith, and production costs are averaging about 8 cents a pound. About 750 men are on the payroll. Earnings are running about $1.50 a share on the 1,400,000 shares, but no immediate payment of dividends is planned as extensive exploration and improvements have been in progress. Good reserves of high-grade copper ore have been opened at the Alpha Shaft. The management has sufficient working capital, and has no bonded, or other indebtedness. J. B. Haffner is manager of mines at Kimberly.
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The Ben Hur Mining Company, R. J. Kelly, president and manager, Tonopah, Nevada, has purchased the Surprise Mining Claim, end-lining the Gold Hill Development Company’s property at Gold Hill, four miles north of Round Mountain. The Gold Hill ledge runs directly through this claim with a showing of surface values of $5 to $6 in gold.
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The Kernick Divide Mining Company, James A. McLaughlin, superintendent, Fallon, Nevada, has made an important strike on the 150-foot level of its property, in Gold Canyon, near Sodaville. The ore body is six feet in width, all good shipping ore. An ore bin is being erected and a carload shipment will go forward at once.
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An assessment of 1/2 cent a share has been levied on the stock of the Silver Butte Consolidated Mining Company, payable to Secretary-Treasurer D. A. Walton, 400 Atlas Building, Salt Lake City. This is assessment No. 11. Silver Butte has a group of 16 claims in the Ruby Valley District in Nevada.
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The Ramsey Comstock Mine, at Ramsey, Nevada, is reported to have been closed down, except for a watchman. The only mine reported to be working in that district now is the Senator, where two men are sinking a working and prospect shaft for Thomas F. Cole.
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The Pure Salt Company, C. S. Boden, president and general manager, Box 861, Reno, Nevada, is setting its kiln on concrete foundations, near Fallon. Foundations for the main building and the furnaces have been completed and the brickwork on the furnaces will start within two weeks. The property is about 25 miles southeast of Fallon and machinery is being installed there to gather the salt, which will be taken to the plant for refining.
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The new mill of the Pioche Mines Company, Pioche, Nevada, John Janney, president and manager, was destroyed by fire on September 16, the eve of the starting of operations. Its capacity was 250 tons and less than 20 per cent of its cost was insured. About two hundred men have been thrown out of employment as the result of the fire.
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The Pony. Meadows Mining Company, D. F. Meiklejohn, president, Dayton, Nevada, intends to build a mill that can treat about 20 tons of ore daily. Its equipment will consist of a Joshua Hendy battery of two stamps of 850 pounds each, two Kinkead mills for finer grinding, plates and four Kraut flotation cells.
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Fred Gilbert, manager of the Gilbert Mammoth Gold Mines Company, operating the Mammoth Mine, at Gilbert, on a five-year lease, announces they now have a large quantity of shipping ore opened on the 160, 200 and 300 levels and will make regular shipments from now on. The first shipment of 60 tons, estimated to run better than $30 per ton in gold, went out September 21, consigned to the Tonopah Mining Company’s Desert mill at Millers.