Reports Upon the Mineral Resources of the United States |
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amalgamation amount Arizona auriferous borax bullion Calaveras county California cent claimants coal Comstock lode containing copper copper mines Copperopolis cost creek crystals deposits depth discovered discovery dollars erected expenses exploration extracted fifty furnaces geological gold and silver Gold Hill Gould & Curry governor Grass valley Hill Humboldt hundred feet inches Indians iron labor lake laws ledge located Mariposa county masses metal Mexican Mexico miles mills mining districts mission Monterey months mountains nearly Nevada county obtained Ophir Oregon owners pans parties persons placer mining portion possession pounds present presidio profit pyrites quantity quartz quartz mining quicksilver record Reese River rich rock running Sacramento salt San Francisco settlers shaft Sierra Nevada silver mines slate smelting specimens springs sulphurets surface survey Territory thousand tion tons tunnel Tuolumne county vein Virginia City Washoe width