Search U.S. government technical reports digitized or harvested by TRAIL.
Review of Bureau of Mines coal program,1969
Bureau of Mines energy program, 1971
Bureau of Mines energy program, 1973,
Ash utilization :proceedings: Third International Ash Utilization Symposium. Sponsored by National Coal Association, Edison Electric Institute, American Public Power Association, National Ash Association, and Bureau of Mines, Pittsburgh, Pa., March 13-14, 1973