Statistics of Mines and Mining in the States and Territories West of the Rocky Mountains: Being the ... Annual Report, 4. izdajaU.S. Government Printing Office, 1873 |
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Stran 7
... tion from them is enhanced by the complexity of their communications and financial connections . The means at my disposal have always been inadequate to the thorough performance of this work as I would like to do it . Ten thou- sand ...
... tion from them is enhanced by the complexity of their communications and financial connections . The means at my disposal have always been inadequate to the thorough performance of this work as I would like to do it . Ten thou- sand ...
Stran 13
... tion is being carried on and important discoveries are being made yearly , requiring attention and investigation . As it is impossible , for these reasons , to personally visit and examine more than a portion of the State each year , an ...
... tion is being carried on and important discoveries are being made yearly , requiring attention and investigation . As it is impossible , for these reasons , to personally visit and examine more than a portion of the State each year , an ...
Stran 14
... large companies have been equally negligent as a general rule . Of the circulars addressed to mining secretaries , but one received atten- tion , though in many cases I have procured the 14 MINING STATISTICS WEST OF THE ROCKY MOUNTAINS .
... large companies have been equally negligent as a general rule . Of the circulars addressed to mining secretaries , but one received atten- tion , though in many cases I have procured the 14 MINING STATISTICS WEST OF THE ROCKY MOUNTAINS .
Stran 15
Being the ... Annual Report. tion , though in many cases I have procured the annual reports of the respective companies , when they have been printed . On the other hand , some replies have been prepared with care , after patient ...
Being the ... Annual Report. tion , though in many cases I have procured the annual reports of the respective companies , when they have been printed . On the other hand , some replies have been prepared with care , after patient ...
Stran 16
... tion . On this subject I quote the following extracts from a series of articles on the " Wastage of the Precious Metals , " written for the Mining and Scientific Press by Almarin B. Paul , of San Francisco : The fact that a high ...
... tion . On this subject I quote the following extracts from a series of articles on the " Wastage of the Precious Metals , " written for the Mining and Scientific Press by Almarin B. Paul , of San Francisco : The fact that a high ...
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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 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 Montana 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