Search U.S. government technical reports digitized or harvested by TRAIL.
Surface coal mining reclamation equipment and techniques :proceedings, Bureau of Mines Technology Transfer Seminars, Evansville, Ind., June 3, 1980, and Denver, Colo., June 5, 1980
Proceedings of Seminar on the Role of Overburden Analysis in Surface Mining, Wheeling, W. Va., May 6-7, 1980
Mine drainage and surface mine reclamation.