[PDF.81zn] Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the United States

Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the United States

[PDF.zp69] Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the United States

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 | #7151741 in Books |  U S Department U S Department of the Interior |  2014-04-15 | Original language:English | PDF # 1 |  11.00 x.6 x8.50l,.19 | File type: PDF | 24 pages

 | Assessment of Undiscovered Deposits of Gold Silver Copper Lead and Zinc in the United States

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This report summarizes the results of the 1998 National Mineral Resource Assessment that estimated the gold, silver, copper, lead, and zinc in undiscovered deposits in the United States. This project also estimated the identified resources and past production of these five metals. Assessment results include the following: • It is estimated that 18,000 metric tons (t) of gold, 460,000 t of silver, 290,000 kilotons (kt) of copper, 85,000 kt of lead, and 210,000 kt of...

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