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Photography, Artistic. --- Abandoned coal mines --- Pictorial works.
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Abandoned coal mines --- Water quality --- Measurement. --- Arkansas.
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Abandoned coal mines --- Mine drainage --- Water --- Streamflow --- Environmental aspects --- Pollution
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Mines and Mineral --- Abandoned Coal Mines --- Environmental Aspects.
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Acid mine drainage --- Abandoned coal mines --- Hazardous wastes --- Purification --- Environmental aspects --- Biodegradation --- Ohio
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Abandoned mined lands reclamation --- Abandoned coal mines --- Law and legislation --- United States.
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Hydrology --- Abandoned coal mines --- Mine subsidences --- Acid mine drainage --- Environmental aspects --- Missouri
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Coalfields --- Groundwater --- Water balance (Hydrology) --- Abandoned coal mines --- Dauphin County Conservation District (Pa.) --- Pennsylvania. --- Pennsylvania
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Abandoned coal mines --- Abandoned mined lands reclamation --- Law and legislation --- Mining law --- Mines and mineral resources --- Law --- Technology & engineering
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Abandoned mined lands reclamation --- Abandoned coal mines --- Coal miners --- Government policy --- Medical care --- Finance. --- Coal mines and mining --- Law --- Technology & engineering
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