Operation Scarlift Pennsylvania. Dept. of Mines and Mineral Industries Published: 1967 Total Pages: 56 Get eBook
Preliminary Design Report of Operation Scarlift, Project SL-116, Acid Mine Drainage Treatment Facilities, City of Altoona Watershed, Horseshoe Curve Area, Logan Township, Blair County, Pennsylvania Gwin Engineers Published: 1968 Total Pages: 344 Get eBook
Challenges for Appalachia--energy, Environment, and Natural Resources Appalachian Regional Commission Published: 1976 Total Pages: 598 Get eBook
Incentive and Abandoned Underground Mines United States. Environmental Protection Agency Published: 1975 Total Pages: 356 Get eBook
