• publisher: [Washington] : U.S. Dept. of the Interior, Bureau of Mines
  • creator: United States. Bureau of Mines. Division of Minerals Health and Safety Technology
  • contributor: United States. Bureau of Mines. Division of Minerals Health and Safety Technology.
  • Keyword: Mine safety United States.
  • years: 1980.
  • pages: ii, 48 p. ;
  • class: TN295
  • download: pdf file