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Solution For Coal Mining In Water Areas
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Solution For Coal Mining In Water Areas

Solution For Coal Mining In Water Areas

Underground Coal Mining Methods to Abate Water Pollution A State of the Art Literature Review Coal Research Bureau West Virginia University Morgantown West Virginia 26506 for the ENVIRONMENTAL PROTECTION AGENCY Project No 14010 FKK December 1970 For sale by the Superintendent of Documents US Government Printing Office Washington DC 20402 Price 60

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