Current mine safety disasters : issues and challenges : hearing before the Committee on Health, Education, Labor, and Pensions, United States Senate, One Hundred Tenth Congress, first session, on examining issues and challenges facing current mine safety, October 2, 2007.
Imprint
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2009.