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Show INTER-MOUNTA- IN A Model 5 rolls, then through a revolving screen tank and provided with trunnions, a framework in which to another pair of Walls rolls, doing suitable supporting and means the trunnions are Plant. A most useful Illustration of what ;an be accomplished In the economic away with the elevator, so indispensi-bl- e and troublesome in some places; thence it passes to the jigs, nine in number. Two types of Jig are used, the Hartz. with continuous discharge, and a patent adaptation of the Cornish hand jig. The ore is treated without sizing, except what is accomplished by water. Thence the product, two tons smelting ores is handling of low-grafurnished by the Ophlr Hill Mining & Concentrating company, wh&se mine and mill are located near Ophlr, Utah. The operations of this company also represent a phase of sliver mining that might be profitably investigated by those Eastern goldbugs who believe that pure silver is broken off from the sides of the mountains in carload lots. There Is probably no silver mine In the West that Is producing ore of so low a grade at a profit, and the owners of other properties might do well to take this plant as a model. Very large bodies of ore have been de low-gra- MINING REVIEW. into one, passes by concentrated gravity into the bins, where it is loaded for transportation, this being the first time it is handled after leaving the mine. The entire plant is operated by water power, Pelton wheels furnishing the power for the mill, and for a power air compressor, which operates drills in the mine, about one- - de 35-ho- rse journaled, attached to one of the trunnions for imparting a rotary motion to the tank. No. 562,021. Gold-washi- ng E. J. Cowley, Boise, Ida. In a gold-separati- ng machine; machine, a combination of a cylinder adapted to contain quicksilver, internal vertical ribs, with side flanges, removable amalgamated plates engaging with said a flanges, and a tangential feed-pipdisremovable cover having a central charge pipe, radial ribs on the under side of said cover having side flanges, and amalgamated plates engaging with said flanges. No. 563,046. Apparatus for separating and saving gold; J. Mait, Oakland, Cal. An apparatus for settling and saving gold, consisting of an inclined table, having grooves or depressions made transversely at intervals between the upper and lower ends, with an upward-b- y projecting lip at the lower edge, mechanism by which the table is oscillated from side to side, and at the same time given a vertical bumping movement, and stationary blades or spoons supported above the depressions and dipping into them, and having rearwardly extending spurs or lips to agitate the material before it flows into the depressions. No. 563,101. Ore sampler; J. A. Top-haAspen, Colo. An comprising a chute mounted to revolve about an approximately horizontal axis, and a stationary feed spout whose delivery end is located below the axis of the rotation of the revolving chute and periodically registers with the inlet of said chute. No. 563,119. Amalgamator; F. B. Austin, Tempe, Ariz. The combination with an inclined sluice having an opening therein of a pan arranged in said opening and having a horizontal bottom, a cover-plat- e held above and Insulated from the pan, spikes respectively projecting from the bottom of the pan and from the under side of the cover-platand means for electrically charging the pan and cover-platNo. 563,143. Process of extracting copper from ores; J. Douglas, New e, m, ore-sampl- er, e, e. York, N. Y. A method of extracting copper from solid cuprous chloride, which consists in moistening said solid cuprous chloride with water, inserting both electrodes of an electric current in the said solid cuprous chloride and then passing an electric current there through. No. 563,181. machine; E. P. Jones, San Francisco, Cal. third of a mile distant. The capacity In an machine, the combination of a pan having an outwardly of the plant is 200 tons in twenty-fou- r peripheral wall, an opening hours, and all the labor required to flaring formed in said wall, invertible dischoperate it is furnished by one man and arge-screens, locking keys for said a boy. One might frequently visit the screens, gaskets at the rear of said mill and find the machinery in full op- screens, and a wedge at the rear of the keys to prevent displacement of the eration, the ore coming from the mine same. and concentrates going into the bins, No. 563,217. for stamp with not a living soul anywhere in mills; H. Bolhoff, Denver, Colo. In an the combination sight. writh a framewrork of an inclined shaft, The mill was designed and built by having its extremities journaled theren Col. E. A. Wall, the miin, a feed-dis- k fast on the shaft, said disk a friction flange or drum, having ning engineer, who is one of the prin- a band engaging said flange, spring-hel- d cipal stockholders in the company. Mr rods to which the extremities of W. G. Nebeker is manager of the mine the band are attached, and means for and mill. actuating the band wThereby a partial rotary movement is imparted to the disk at suitable intervals. and No. 563,234. Apparatus for reducing Mining Metallurgical Patents. antimony ores; E. Kratzer, Thompson Mont. List of patents relating to mining, is- Falls, In an antimony ore furnace, a consued June 30, 1896. Reported for the Min- denser formed of a series of parallel soReview a J. bottom therefor, a wooden F. ing by frames, Corker, patent licitor, office No. 311 and 312 Atlas block, fabric covering stretched over said Salt Lake City, Utah. Copies furnished frames and forming the top, sides and ends of the condenser and pipe connecfor 15 cents each. ends of said contions in the No. 562,882. Amalgamating appara- denser for theopposite inlet and outlet pipes. tus; J. A. Bentley, Denver, Colo. In an amalgamating apparatus, a Mining Abstracts. combination of a cylindrical tank, havE. W. Genter, Abstractor of Titles. ing detachable ends, the inner surface comof the tank being amalgamated, Complete abstracts of all mining property in Salt Lake and Tooele counties, pression heads, rods connecting the 150 Main street. to a skeleton attached the heads, cage THE OPIIIR HILL CONCENTRATOR. developed In the mine, the average contents being: Silver, 11 ounces; lead, 5 per cent; iron, 10 per cent; copper, 2 per cent, and a small percentage of zinc. Such a product, in view of a wagon and railroad haul entailing con- - I siderable expense, would not seem to ! encourage the operation of the property. The ore, in its crude state, is not of sufficient value to pay for transportation to market; hence the necessity of a cheap method of concentration. Wonderful results have been obtained, as shown by the cost of mining and concentrating, which is 90 cents to $1.25 per ton, while the cost of concentrating alone is but 15 to 16 cents per ton. The mill was built with special view to the economic handling of the ore, eliminating all unnecessary machinery, reducing labor to the minimum, simply for the guidance of the machinery, at the same time being arranged to handle an immense tonnage. As the ore leaves the mine it goes to the ore-biby gravity over the gravity tramway shown in the engraving. From the ore-biit passes through a large Dodge crusher, and from the chute under the crusher it is delivered by an automatic feeder to a large pair of Walls ns ns Ore-crushi- ng ore-crushi- ng Ore-feed- er ore-feed- well-know- er, |
