Silver and Gold: An Account of the Mining and Metallurgical Industries of the United States |
من داخل الكتاب
النتائج 6-10 من 56
الصفحة 86
... prospecting - drift has been driven south from Badger shaft on the Panama level 220 feet , but no rock in paying quantities was found . The Middle shaft has required considerable repairs , but is now in fair condition . This shaft has ...
... prospecting - drift has been driven south from Badger shaft on the Panama level 220 feet , but no rock in paying quantities was found . The Middle shaft has required considerable repairs , but is now in fair condition . This shaft has ...
الصفحة 92
... prospecting at varying heights . Both of these ledges have been opened at various places , from 50 to 300 feet apart , covering , in all , some 1,500 feet . Several of the minor ledges have been prospected , each presenting the same ...
... prospecting at varying heights . Both of these ledges have been opened at various places , from 50 to 300 feet apart , covering , in all , some 1,500 feet . Several of the minor ledges have been prospected , each presenting the same ...
الصفحة 119
... prospecting have been successful in strik- ing rich spots in the channel . The Webster Company are reported to have taken $ 27,000 from a piece of gravel in this claim 25 by 100 feet in dimensions . The Picayune Company also have rich ...
... prospecting have been successful in strik- ing rich spots in the channel . The Webster Company are reported to have taken $ 27,000 from a piece of gravel in this claim 25 by 100 feet in dimensions . The Picayune Company also have rich ...
الصفحة 123
... prospecting the ledge as they went down . The company have a five - stamp mill , steam - power , 800 - pound stamps , nine - inch dies , eleven - inch drop and sixty - five drops per minute , with a capacity of ten tons per day . There ...
... prospecting the ledge as they went down . The company have a five - stamp mill , steam - power , 800 - pound stamps , nine - inch dies , eleven - inch drop and sixty - five drops per minute , with a capacity of ten tons per day . There ...
الصفحة 124
... DISBURSEMENTS . Dividends to stockholders .. Mining account .... Milling account .. $ 360,000 154 , 551 36,702 Construction . Mine purchase .. Prospecting .. General expenses . 124 MINING STATISTICS WEST OF THE ROCKY MOUNTAINS .
... DISBURSEMENTS . Dividends to stockholders .. Mining account .... Milling account .. $ 360,000 154 , 551 36,702 Construction . Mine purchase .. Prospecting .. General expenses . 124 MINING STATISTICS WEST OF THE ROCKY MOUNTAINS .
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
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