Frictional ignition of natural gas-air mixtures by alternative coal-cutter bit shank materials
By: by L. Garner McDonald.
Series: Report of investigations ;; 9417; Report of investigations (United States. Bureau of Mines) ;; 9417.
Publisher: Dept. of the Interior, Bureau of Mines
Published: 1992
Place of publication: Washington, D.C
Language: eng
Number of pages: 14
Subjects: Mine explosions -- Prevention.; Coalbed methane -- Combustion.; Coal-cutting bits -- Testing.; Friction.
Notes: Includes bibliographical references (p. 9-10).