Reduction in frictional ignition due to conical coal-cutting bits
By: by Lung Cheng, Aldo L. Furno, and Welby G. Courtney.
Contributors: Furno, A. L.; Courtney, Welby G.
Series: Report of investigations ;; 9134; Report of investigations (United States. Bureau of Mines) ;; 9134.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1987
Place of publication: Pittsburgh, Pa
Language: eng
Number of pages: 10
Subjects: Coal-cutting bits -- Testing.; Mine fires -- Prevention and control.
Notes: Bibliography: p. 10.