• publisher: Pittsburgh, Pa. : U.S. Dept. of the Interior, Bureau of Mines
  • creator: Coughlin, John P Sines, Clinton D
  • contributor: Sines, Clinton D.
  • Keyword: Mine safety Equipment and supplies Testing. Seismometers Testing.
  • years: 1985.
  • pages: 8 p. :
  • class: TN295
  • download: pdf file