Search U.S. government technical reports digitized or harvested by TRAIL.
Acid mine water in the anthracite region of Pennsylvania
Administration of the Federal Coal-Mine Safety Act
Administration of the Federal Coal-Mine Safety Act, calendar year 1955
Rock dusting and sampling including wet rock dusting at the Bureau of Mines experimental coal mine
Administration of the Federal Coal-Mine Safety Act :calendar year 1954
Health and safety activities of the Bureau of Mines :fiscal year 1955
Administration of the Federal Coal-Mine Safety Act, calendar year 1956
Engineering control of health and safety hazards in uranium mines
Administration of the Federal Coal-Mine Safety Act, calendar year 1957
Administration of the Federal Coal-Mine Safety Act, 1952-58
Administration of the Federal Coal-Mine Safety Act, 1952-59
Administration of the Federal Coal-Mine Safety Act, 1952-60