Search U.S. government technical reports digitized or harvested by TRAIL.
Technology and use of lignite.Proceedings: Bureau of Mines-University of North Dakota Symposium, Grand Forks, N. Dak., April 29-30, 1965
Technology and use of lignite.Proceedings: Bureau of Mines-University of North Dakota Symposium, Grand Forks, N. Dak., May 9-10, 1973.
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.
International Land Reclamation and Mine Drainage Conference and Third International Conference on the Abatement of Acidic Drainage :proceedings of a conference held in Pittsburgh, PA on April 24-29, 1994.