USBM IC 8656
Comparative porphyry copper mining and processing costs - Alaska and Arizona
Publisher:U.S. Bureau of Mines
Ordering Info:This publication is out of print. Reproductions may be available.
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Bottge, R.G., 1974, Comparative porphyry copper mining and processing costs - Alaska and Arizona: U.S. Bureau of Mines Information Circular 8656, 55 p.
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