Silver and Gold: An Account of the Mining and Metallurgical Industries of the United States |
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Halaman 7
... four by myself , ) has been recognized at home and abroad as highly important and valuable , constituting not only a repository of much current infor- mation , but a display of the natural resources of the country , and a history of ...
... four by myself , ) has been recognized at home and abroad as highly important and valuable , constituting not only a repository of much current infor- mation , but a display of the natural resources of the country , and a history of ...
Halaman 14
... four sets of these blanks were dispatched , and these elicited but thirty - one replies , though in some cases the returns were comprehensive and valuable . In 1870 , the deep placers of Nevada , Yuba , and Placer Counties were visited ...
... four sets of these blanks were dispatched , and these elicited but thirty - one replies , though in some cases the returns were comprehensive and valuable . In 1870 , the deep placers of Nevada , Yuba , and Placer Counties were visited ...
Halaman 23
... four fifty - vara lots to be filled in up to deep water , and these will be covered completely with the requisite buildings , the work being already under active headway . A large coffer - dam is to be sunk at the outer extremity of the ...
... four fifty - vara lots to be filled in up to deep water , and these will be covered completely with the requisite buildings , the work being already under active headway . A large coffer - dam is to be sunk at the outer extremity of the ...
Halaman 27
... four or five miles of this town . And I have no doubt that many more have been picked up and looked at and thrown away , the finders not knowing what they were . During my stay in El Dorado County I have seen and recognized two of these ...
... four or five miles of this town . And I have no doubt that many more have been picked up and looked at and thrown away , the finders not knowing what they were . During my stay in El Dorado County I have seen and recognized two of these ...
Halaman 28
... four in dimensions , and covers an area of about nine thousand square miles , extending from Stanislaus County on the south to Plumas County on the north . I propose , however , to extend it in both directions , so that it may be ...
... four in dimensions , and covers an area of about nine thousand square miles , extending from Stanislaus County on the south to Plumas County on the north . I propose , however , to extend it in both directions , so that it may be ...
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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