U.D. Department of Energy ; co-sponsored by the Mining and Excavation Research Institute, ASME, U.S. Bureau of Mines, Colorado Center of Engironmental Management ; with participation by American Mining Congress, American Society of Civil Engineers, Society for Mining, Metallurgy, and Exploration, Inc.American Society of Mechanical Engineersc1991
conference chairman, Michael Hood, David Dornfeld ; sponsored by the Water Jet Technology Association, the Mining and Excavation Research InstituteAmerican Society of Mechanical Engineersc1987