The Reserve Base of U.S. Coals by Sulfur Content Robert D. Thomson Published: 1975 Total Pages: 548 Get eBook
Effects of Coal Mining on the Water Resources of the Tradewater River Basin, Kentucky Hayes F. Grubb Published: 1972 Total Pages: 96 Get eBook
Barite: World Production, Reserves, and Future Prospects Donald Albert Brobst Published: 1970 Total Pages: 624 Get eBook
The Reserve Base of Bituminous Coal and Anthracite for Underground Mining in the Eastern United States United States. Bureau of Mines Published: 1974 Total Pages: 436 Get eBook