(See related pages)
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| Aggregate | ||
( http://minerals.usgs.gov/minerals/pubs/commodity/aggregates/fs14497.pdf ) | ||
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| Placer Mining | ||
( http://greenwood.cr.usgs.gov/pub/fact-sheets/fs-0155-97/fs-0155-97.pdf ) | ||
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| Placer Mining | ||
( http://greenwood.cr.usgs.gov/pub/fact-sheets/fs-0154-97/fs-0154-97.pdf ) | ||
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| Overview | ||
( http://minerals.usgs.gov/ ) | ||
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| Overview | ||
( http://minerals.usgs.gov/west/ ) | ||
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| Links | ||
( http://minerals.usgs.gov/west/links.html ) | ||
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| Mine Reclamation | ||
( http://greenwood.cr.usgs.gov/pub/circulars/c1191/ ) | ||
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| Fact Sheet | ||
( http://greenwood.cr.usgs.gov/pub/fact-sheets/fs-0011-98/fs-0011-98.pdf ) | ||
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| Mine Drainage | ||
( http://ca.water.usgs.gov/mine/ ) | ||
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