Silver and Gold: An Account of the Mining and Metallurgical Industries of the United States |
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Halaman 14
... yield of hydraulic ground , per cubic yard ; and a statement of the yield and expense of milling per cubic yard ( where stamps are used ) in cement and gravel claims . Superintendents and secretaries of mining companies , and ...
... yield of hydraulic ground , per cubic yard ; and a statement of the yield and expense of milling per cubic yard ( where stamps are used ) in cement and gravel claims . Superintendents and secretaries of mining companies , and ...
Halaman 17
... yield of ore in mill , $ 18.60 . Wastage after complete washing , including concentrating - silver , $ 3.14 ; gold , $ 10.04 ; total , $ 13.18 . Test No. 2. Same mill - tailings 350 feet from mill : silver , $ 3.93 ; gold , $ 5.02 ...
... yield of ore in mill , $ 18.60 . Wastage after complete washing , including concentrating - silver , $ 3.14 ; gold , $ 10.04 ; total , $ 13.18 . Test No. 2. Same mill - tailings 350 feet from mill : silver , $ 3.93 ; gold , $ 5.02 ...
Halaman 18
... yield of Quartz Mountain ran 9 per cent . silver . The ores of all the counties of California carry silver , and my experiments show they run from 3 to 50 per cent . of the yield . The closer the concentration from batteries , the ...
... yield of Quartz Mountain ran 9 per cent . silver . The ores of all the counties of California carry silver , and my experiments show they run from 3 to 50 per cent . of the yield . The closer the concentration from batteries , the ...
Halaman 20
... yield of the precious metals for the entire coast has , of course , been greatly curtailed in con- sequence of the restricted amount of rain that has fallen for the past two years ; the effect of which has proved more disastrous to the ...
... yield of the precious metals for the entire coast has , of course , been greatly curtailed in con- sequence of the restricted amount of rain that has fallen for the past two years ; the effect of which has proved more disastrous to the ...
Halaman 25
... yield large revenues and rank among the most de- sirable properties in the State . Encouraging developments , new ... yielding fair and often munificent returns . Among other properties that have long been slumbering , but are soon to be ...
... yield large revenues and rank among the most de- sirable properties in the State . Encouraging developments , new ... yielding fair and often munificent returns . Among other properties that have long been slumbering , but are soon to be ...
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Istilah dan frasa umum
50 feet amalgam amount antimony arrastra assay average Bannack base bullion bed-rock bullion Calaveras County California CaƱon carbonate cent chemical claim coal commenced company's contains copper cost County course Creek Cupellation December deposits depth developed district ditch 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 metallurgy metals 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