Bit ignition potential with worn carbide tips
By: by Wallace W. Roepke and Bruce D. Hanson
Contributors: Hanson, Bruce D; United States. Bureau of Mines
Series: Technical progress report -- 121; Bureau of Mines technical progress report -- TPR 121
Publisher: Bureau of Mines, U.S. Dept. of the Interior
Published: 1983
Place of publication: [Pgh., PA, i.e. Pittsburgh, Pa.]
Language: eng
Subjects: Carbide cutting tools; Coal mines and mining -- United States -- Equipment and supplies
Notes: "Bureau of Mines Health and Safety Technology Program."

Distributed to depository libraries in microfiche

"August 1983."

Bibliography: p. 7