Silver and Gold: an Account of the Mining and Metallurgical Industry of the United States: With Reference Chiefly to the Precious MetalsJ.B. Ford and Company, 1873 - 566 страница |
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Страница 33
... bottom of each alternate corrugation is a narrow slit through which the heavier material falls down into another riffle below with larger corrugations . Both riffles are set on the same grade , which should be about one foot in twelve ...
... bottom of each alternate corrugation is a narrow slit through which the heavier material falls down into another riffle below with larger corrugations . Both riffles are set on the same grade , which should be about one foot in twelve ...
Страница 34
... bottom of the box is connected with a lever and a rod , and is shaken at each blow of the middle stamp of the battery by means of au upper tappet which strikes upon one arm of the lever . By this means motion is communicated to the ...
... bottom of the box is connected with a lever and a rod , and is shaken at each blow of the middle stamp of the battery by means of au upper tappet which strikes upon one arm of the lever . By this means motion is communicated to the ...
Страница 35
... bottom of the pan , which is opened like a trap - door , by means of a lever , when they have accumulated to such an extent as to retard the grinding and pulverizing of the cement in the pan . Four revolving- arms are attached to a ...
... bottom of the pan , which is opened like a trap - door , by means of a lever , when they have accumulated to such an extent as to retard the grinding and pulverizing of the cement in the pan . Four revolving- arms are attached to a ...
Страница 43
... bottom of the borings . If additional depth is desired the machines are set at work again , and a new set of deep borings is made . The sides and corners are found to be remarkably true and smooth . The drills here used are not annular ...
... bottom of the borings . If additional depth is desired the machines are set at work again , and a new set of deep borings is made . The sides and corners are found to be remarkably true and smooth . The drills here used are not annular ...
Страница 44
... bottom by which it is secured when in operation . The other cylinder is seven inches long and five in diameter , and is secured on the top of the other at one end and parallel with it , the two being arranged somewhat like the barrels ...
... bottom by which it is secured when in operation . The other cylinder is seven inches long and five in diameter , and is secured on the top of the other at one end and parallel with it , the two being arranged somewhat like the barrels ...
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50 feet amalgam amount antimony arrastra assay average Bannack base bullion bed-rock bullion Calaveras County California Cañon carbonate cent chemical claim coal commenced company's contains copper cost County course Creek Cupellation December deposits depth developed discovery district drift drill east El Dorado County engine erected Eureka expense extracted feet deep feet in length feet long feet wide furnace galena gangue gold Gold Hill gravel ground Gulch Hill hundred hydraulic inches incline iron labor lead ledge limestone located lode metal metallurgy miles mill miners Mining Company months nearly Nevada opened operations ounces owners placer mines pounds present Professor prospecting quantity quartz quartzite rich River rock San Francisco silver slag slate smelting smelting-works stamps stopes sulphurets sunk supply surface Table Mountain tailings thick tion tons Total tunnel Tuolumne County tuyeres Valley vein width yield
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Страница 455 - States governing their possessory title, shall have the exclusive right of possession and enjoyment of all the surface included within the lines of their locations, and of all veins, lodes, and ledges throughout their entire depth, the top or apex of which lies inside of such surface lines extended downward vertically, although such veins, lodes, or ledges may so far depart from a perpendicular in their course downward as to extend outside the vertical side lines of such surface locations.
Страница 454 - ... no location of a mining claim shall be made until the discovery of the vein or lode within the limits of the claim located.
Страница 454 - No claim shall extend more than three hundred feet on each side of the middle of the vein at the surface, nor shall any claim be limited by any mining regulation to less than twenty-five feet on each side of the middle of the vein at the surface, except where adverse rights existing on the tenth day of May, eighteen hundred and seventytwo, render such limitation necessary.
Страница 455 - May, eighteen hundred and seventy-two, and until a patent has been issued therefor, not less than one hundred dollars' worth of labor shall be performed or improvements made during each year. On all claims located prior to the tenth day of May, eighteen hundred and seventy-two, ten dollars...
Страница 456 - Surveyor-General that five hundred dollars' worth of labor has been expended or improvements made upon the claim by himself or grantors; that the plat is correct, with such further description by such reference to natural objects or permanent monuments as shall identify the claim, and furnish an accurate description, to be incorporated in the patent. At the expiration of the sixty days of publication the claimant shall file his affidavit, showing that the plat and notice have been posted in a conspicuous...
Страница 458 - An act granting the right of way to ditch and canal owners over the public lands, and for other purposes...
Страница 457 - ... separate and different portions of the claim, each party may pay for his portion of the claim, with the proper fees, and file the certificate and description by the...
Страница 458 - ... which does not include an application for the vein or lode claim shall be construed as a conclusive declaration that the claimant of the...
Страница 456 - If no adverse claim shall have been filed with the register and the receiver of the proper land office at the expiration of the sixty days of publication, it shall be assumed that the applicant is entitled to a patent...
Страница 454 - All valuable mineral deposits in lands belonging to the United States, both surveyed and unsurveyed, are hereby declared to be free and open to exploration and purchase...