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 halaman |
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Halaman 24
... located , by right of discovery , obtained by purchase and grant , and taken possession of twenty - four lakes , varying in extent from one hundred to two thousand acres each , situated in the Sierra Nevada Mountains , in El Dorado ...
... located , by right of discovery , obtained by purchase and grant , and taken possession of twenty - four lakes , varying in extent from one hundred to two thousand acres each , situated in the Sierra Nevada Mountains , in El Dorado ...
Halaman 35
... located at inaccessible points , or where it is difficult to transport the ores from the ledge to the mill . It can be used at such locations for the delivery of material or ores in mountainous places or deep gorges ; from the shore to ...
... located at inaccessible points , or where it is difficult to transport the ores from the ledge to the mill . It can be used at such locations for the delivery of material or ores in mountainous places or deep gorges ; from the shore to ...
Halaman 49
... located would not exceed 100,000 feet , while the ground now in process of development ( including only those claims on which work has been done in 1871 ) will not exceed 40,000 feet , exclusive of the Mariposa estate , on which ...
... located would not exceed 100,000 feet , while the ground now in process of development ( including only those claims on which work has been done in 1871 ) will not exceed 40,000 feet , exclusive of the Mariposa estate , on which ...
Halaman 52
... located , and hundreds of tunnels run to strike the channel . From the best data at our disposal we estimate the total length of tunnels run in this mountain at forty thousand feet , at a cost of not less than $ 800,000 . The number of ...
... located , and hundreds of tunnels run to strike the channel . From the best data at our disposal we estimate the total length of tunnels run in this mountain at forty thousand feet , at a cost of not less than $ 800,000 . The number of ...
Halaman 53
... located by San Francisco capi- talists , and vast projects are under way for bringing water to them by tapping the rivers high up in the mountains . Of this character is the enterprise known as the " La Grange Ditch Company , " which is ...
... located by San Francisco capi- talists , and vast projects are under way for bringing water to them by tapping the rivers high up in the mountains . Of this character is the enterprise known as the " La Grange Ditch Company , " which is ...
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50 feet amalgam amount antimony arrastra assay average Bannack base bullion bed-rock bullion Calaveras County California Caņon 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 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