Known Gold Deposits in the United States okumak kayıt olmadan

Known Gold Deposits in the United States

Tarih

As part of its regular program to provide timely information on domestic mineral commodities, the Bureau of Mines conducted an engineering appraisal of more than 1,300 lode and placer gold deposits in the United States to determine their gold production potential. While these deposits were estimated to contain over 400 million ounces of gold, only 9 million ounces, or slightlymore than 2 percent, was found to be producible at $35 per ounce under prevailing mining and metallurgical technologies. The study revealed that any significant increase in available gold in the United States is most likely to come from the discovery of new sources, intensive exploration and development of the more promising known mineralized areas, and development of new or improved mining and metallurgical techniques.

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1 Haziran 2018 Palala Press 1 x 13,5 x 21 cm Kolektif 28 Şubat 2018 Nabu Press Anonymous 18,9 x 0,3 x 24,6 cm 21,6 x 0,2 x 27,9 cm 27 Ekim 2012 Wentworth Press 18,9 x 0,2 x 24,6 cm 26 Ağustos 2016 HardPress Publishing 15,6 x 0,2 x 23,4 cm 31 Ağustos 2012 4 Ocak 2017 15,6 x 0,6 x 23,4 cm

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