prepared by The Babcock & Wilcox Company, Research and Development Division ; principal investigators, B. Kraje, L. Smith, N. Snidow ; subcontractors, General Physics Corporation ; principal investigators, M. Donovan, E. Levinson ; Energy Incorporated ; principal investigator, D. Bucheit
co-sponsored by the Department of Mineral Engineering, College of Earth and Mineral Sciences, the Pennsylvania State University and the Mining Extension Service, College of Mineral Energy Resources, West Virginia University