A simplified economic filter for underground mining of massive sulfide deposits (Q74455)

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A simplified economic filter for underground mining of massive sulfide deposits; 2000; OFR; 2000-349; Singer, D. A.; Menzie, W. D.; Long, Keith R.
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A simplified economic filter for underground mining of massive sulfide deposits
A simplified economic filter for underground mining of massive sulfide deposits; 2000; OFR; 2000-349; Singer, D. A.; Menzie, W. D.; Long, Keith R.

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