Reports Upon the Mineral Resources of the United StatesU.S. Government Printing Office, 1867 - 360 Seiten First in a series of reports by Browne (later continued by Rossiter Raymond). This is followed by a reprint of Edmund Randolph's 'Address on the history of California, from the discovery of the country to the year 1849' (p. 268-504, first published in 1860) and John W. Dwinelle's 'Address on the acquisition of California by the United States' (p. 306-321, first published in 1866. Also reprinted in this volume are James W. Taylor's report upon gold and silver mining East of the Rocky Mountains (p. 323-350) and the Dept. of the Interior's 'Circular in relation to mining claims' (p. 351-357), both of which were omitted in the earlier 320 p. issue. |
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Seite 10
... copper mines of the Pacific coast . In this paper a h story of the discovery of every notable copper lode is given ; the extent of the veins ; the quality of the ore ; the process of reduction ; the costs of machinery and working ; the ...
... copper mines of the Pacific coast . In this paper a h story of the discovery of every notable copper lode is given ; the extent of the veins ; the quality of the ore ; the process of reduction ; the costs of machinery and working ; the ...
Seite 14
... copper , lead , sulphur , and coal mines are to be found all over California , and it is equally doubtful whether , under their present owners , they will ever be worked . " The implication here is that if the country were only ...
... copper , lead , sulphur , and coal mines are to be found all over California , and it is equally doubtful whether , under their present owners , they will ever be worked . " The implication here is that if the country were only ...
Seite 35
... copper in depth , undergo a real deterioration . Yet they have evidently had at upper levels their concentrated bodies of rich ore . Such have been extracted at Schemnitz within the time of historical record , while their former ...
... copper in depth , undergo a real deterioration . Yet they have evidently had at upper levels their concentrated bodies of rich ore . Such have been extracted at Schemnitz within the time of historical record , while their former ...
Seite 38
... copper ; and it is a notorious fact that not even one per cent . of the claims discovered by those persons have ever proved remunerative to those who invested money in their development . In 1861 - '62 the excitement ran high on copper ...
... copper ; and it is a notorious fact that not even one per cent . of the claims discovered by those persons have ever proved remunerative to those who invested money in their development . In 1861 - '62 the excitement ran high on copper ...
Seite 42
... copper - bearing veins which have been recently dis- covered , some few of which are valuable , while their " extensions " are almost invariably worthless . The outcrop of these mines is a very marked and noticeable feature in the ...
... copper - bearing veins which have been recently dis- covered , some few of which are valuable , while their " extensions " are almost invariably worthless . The outcrop of these mines is a very marked and noticeable feature in the ...
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Amador county amalgamation amount Arizona auriferous borax bullion Calaveras county California cent claimants coal coast 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 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 Pacific pans parties persons placer mining portion pounds present presidio production profit pyrites quantity quartz quartz mining quicksilver record Reese River rich rock running Sacramento salt San Francisco settlers shaft Sierra Nevada silver mines slate specimens springs sulphurets surface survey Territory thousand tion tons tunnel Tuolumne county vein Virginia City Washoe width