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 |
Dari dalam buku
Hasil 1-5 dari 92
Halaman 21
... mines to a more free production . Investments of capital . - During the past two or three years invest- ments on ... mines have been forced up in the market abroad to figures that there was nothing in their condition or prospects to ...
... mines to a more free production . Investments of capital . - During the past two or three years invest- ments on ... mines have been forced up in the market abroad to figures that there was nothing in their condition or prospects to ...
Halaman 22
... mines to advantage it becomes necessary that a large area of ground should be secured ; to which end the titles to individual claims are first extin- guished when they are aggregated in large masses , for which a United States patent is ...
... mines to advantage it becomes necessary that a large area of ground should be secured ; to which end the titles to individual claims are first extin- guished when they are aggregated in large masses , for which a United States patent is ...
Halaman 48
... mines are the Union , owned by Glidden & Williams , of Boston , Massa- chusetts , and the Keystone , the title of which is in litigation . Both of these claims are opened to a depth of from 400 to 500 feet , and have expensive and ...
... mines are the Union , owned by Glidden & Williams , of Boston , Massa- chusetts , and the Keystone , the title of which is in litigation . Both of these claims are opened to a depth of from 400 to 500 feet , and have expensive and ...
Halaman 50
... mines of the neighboring State of Nevada , where fortunes are made ( and lost ) with greater rapidity in mining operations . The amount of ore crushed by mills on the Mother lode has been less for this year than for several years past ...
... mines of the neighboring State of Nevada , where fortunes are made ( and lost ) with greater rapidity in mining operations . The amount of ore crushed by mills on the Mother lode has been less for this year than for several years past ...
Halaman 51
... mines of Rail- road Flat and West Point , and in Amador County a group of promising mines , near Volcano . At these places hundreds of veins exist , yielding high - grade rock , but few of which are developed below the water - line ...
... mines of Rail- road Flat and West Point , and in Amador County a group of promising mines , near Volcano . At these places hundreds of veins exist , yielding high - grade rock , but few of which are developed below the water - line ...
Edisi yang lain - Lihat semua
Istilah dan frasa umum
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 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