Frictional ignition of methane by continuous mining machines in underground coal mines /
by Edward M. Kawenski, George C. Price, and Clete R. Stephan.

APA Citation

Kawenski, E. M., Price, G. Cletus., Stephan, C. R., United States. Mine Safety and Health Administration. (1979). Frictional ignition of methane by continuous mining machines in underground coal mines. [Arlington, Va.]: Dept. of Labor, Mine Safety and Health Administration.

MLA Citation

Kawenski, Edward M, George Cletus Price, Clete R Stephan, and United States. Mine Safety and Health Administration. Frictional Ignition of Methane by Continuous Mining Machines In Underground Coal Mines. [Arlington, Va.]: Dept. of Labor, Mine Safety and Health Administration, 1979.