Silver and Gold: an Account of the Mining and Metallurgical Industry of the United States: With Reference Chiefly to the Precious MetalsJ.B. Ford, 1873 - 566 من الصفحات |
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الصفحة 18
... antimony , which is to be found in nearly all the gold ores of California , vitiates the mercury in a little while , rendering it quite inefficient in collecting even the gold that otherwise from gravity might be taken up . It is too ...
... antimony , which is to be found in nearly all the gold ores of California , vitiates the mercury in a little while , rendering it quite inefficient in collecting even the gold that otherwise from gravity might be taken up . It is too ...
الصفحة 201
... antimony . The Woodburn crops to the surface for a distance of 200 feet , and shows good ore the whole length . The thickness of the vein is 8 feet ; it is opened by a surface cut , from which several tons of ore have been taken that ...
... antimony . The Woodburn crops to the surface for a distance of 200 feet , and shows good ore the whole length . The thickness of the vein is 8 feet ; it is opened by a surface cut , from which several tons of ore have been taken that ...
الصفحة 204
... antimony . The Uncle Sam is opened by an incline 56 feet deep , which shows a ledge 5 feet thick . The ore is argentiferous galena . The average value per ton is $ 68 , while some of the richest ore yields $ 320 per ton . Mills in White ...
... antimony . The Uncle Sam is opened by an incline 56 feet deep , which shows a ledge 5 feet thick . The ore is argentiferous galena . The average value per ton is $ 68 , while some of the richest ore yields $ 320 per ton . Mills in White ...
الصفحة 212
... antimony - ledge has been worked this fall , and about 100 tons shipped to San Francisco . The little demand for the metal here , and the danger of an over - stocked market , make the busi- ness somewhat precarious . Central district ...
... antimony - ledge has been worked this fall , and about 100 tons shipped to San Francisco . The little demand for the metal here , and the danger of an over - stocked market , make the busi- ness somewhat precarious . Central district ...
الصفحة 213
... Antimony in Nevada . For the following interesting description of some remarkable antimony - mines , I am indebted to Mr. William L. Faber , a metallurgist of scientific training and practical experience . The mines are situated in ...
... Antimony in Nevada . For the following interesting description of some remarkable antimony - mines , I am indebted to Mr. William L. Faber , a metallurgist of scientific training and practical experience . The mines are situated in ...
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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 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