The Mines of Colorado, Volume 20 |
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Results 1-5 of 74
Page 65
... engine was set up , forty hands put on , and up to the close of 1863 , twenty thousand dollars additional were taken out . Ne- gotiations had then commenced for the sale of the property , in connection with other on the Gregory , to ...
... engine was set up , forty hands put on , and up to the close of 1863 , twenty thousand dollars additional were taken out . Ne- gotiations had then commenced for the sale of the property , in connection with other on the Gregory , to ...
Page 137
... engines , and from fifty to one hundred stamps weighing eight hundred pounds each , besides any amount of cast - iron pans of various patterns , the whole extravagantly disproportioned to the mines they were intended for . The foun ...
... engines , and from fifty to one hundred stamps weighing eight hundred pounds each , besides any amount of cast - iron pans of various patterns , the whole extravagantly disproportioned to the mines they were intended for . The foun ...
Page 145
... there is also a shaft , now 330 feet deep , opening on the surface in a 20 - stamp mill . The hoisting and pumping are done by a 150 - horse • engine , which also furnishes motive power for the 7 BLACK HAWK GOLD MINING COMPANY . 145.
... there is also a shaft , now 330 feet deep , opening on the surface in a 20 - stamp mill . The hoisting and pumping are done by a 150 - horse • engine , which also furnishes motive power for the 7 BLACK HAWK GOLD MINING COMPANY . 145.
Page 146
... engine adjoining , and is in very good shape , worked by regular levels , the first two of which are exhausted ; the ... engine - house , with a 40 - horse engine , on the Bobtail mine . On Gregory 16 and 17 , there are shafts 60 and 90 ...
... engine adjoining , and is in very good shape , worked by regular levels , the first two of which are exhausted ; the ... engine - house , with a 40 - horse engine , on the Bobtail mine . On Gregory 16 and 17 , there are shafts 60 and 90 ...
Page 147
... engine is 150 - horse , and is supplied with water from North Clear Creek , which passes between the engine - house and mill . A steam pump and suffi- cient hose provide reasonable guarantee against accidents by fire . This mill and ...
... engine is 150 - horse , and is supplied with water from North Clear Creek , which passes between the engine - house and mill . A steam pump and suffi- cient hose provide reasonable guarantee against accidents by fire . This mill and ...
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50 feet adit agent arastras Arkansas Arkansas River assays average beds Black Hawk Bobtail California Central City claim Clear Creek County coal Colorado copper County crevice Crosby & Thompson Denver discovery dollars east eastern engine engine-house feet deep feet long fifty five fork four furnace Gold Mining Company Golden City gossan Gregory Gulch head hight hoisting hundred feet inches iron Kansas Kanyon Lake lodes machinery Middle Park miles miners Missouri River Moun Mount Lincoln mouth Nevada pans party Pass Pike's Peak placer mining Plains Platte pyrites Quartz Hill Range rich River rock Rocky Mountains Russell Gulch sandstone silver sluice smelting snow South Boulder South Clear Creek South Park specimens Spring stamp mill stone stream summit Summit County surface tains Territory thick thousand feet timber tion tons town tributaries tunnel twelve twenty Valley vein width Winter yield