 | | Report (volume) | | INDIAN RESERVATION WASHINGTON BT J. T. PARDEE SCHOOL OF OHIO STATE UNIVERSITY. WASHINGTON GOVERNMENT PRINTING................................................. Covada group............................................................................ 50 History of mining............................................................................ 54 Condition of the mining industry.................................................................. 56 Nespelem (Moses) district............................................. |  | | Report (volume) | | 1081-F NITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1961 UNITED STATES DEPARTMENT OF THE INTERIOR...silver, copper, lead, and zinc for the Dome district, Butte County, Idaho, 1901-1955, in terms of recoverable...copper, lead, and zinc for the Hamilton district, Butte County, Idaho, 1901-1955, in terms of recoverable...and other metals began in the area about 1880. Mining was inactive at the time of visit, in 1954 and...northeastern part of Butte County and the southwestern corner of Clark County are included. The mountains |  | | Book | | Mineral exploration is financially a high-risk enterprise — or gamble — where the odds of success are commonly...COMMODITY SELECTION OTHER OPTIONS purchase of mine, prospect, etc. acquisition of regional scale geological...EXPLORATION SELECTION OF REGION SELECTION OF DISTRICT o o o t> o o [ 1 reconnaissance exploration...of magnitude: region: greater than 5000 km2 ; district: 500-5000 km 2 ; area: 5—50 km 2 ; target: less...using existing knowledge. For example, in a known mining area a particular lithological structural unit |
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