Coal Research Board Special Research Reports | Penn State ...
Coal Mine Refuse Disposal in Great Britain, by H. Gordon Glover. 1971. SR-82: Prevention of Coal Mine Drainage Formation by Well Dewatering, by Parizek. 1971. SR-83: Pennsylvania Anthracite Refuse: A Literature Survey on Chemical Elements in Coal and Coal Refuse, by Shiou-chuan Sun. 1971. SR-84