- Additional Authors
- United States. Bureau of Mines.
- Description
- ii, 25 p. : ill.; 28 cm.
- Series Statement
- Information circular ; 9251
- Uniform Title
- Information circular (United States. Bureau of Mines) ; 9251.
- Subjects
- Note
- Distributed to depository libraries in microfiche.
- Bibliography (note)
- Includes bibliographical references (p. 25).
- Call Number
- READEX Microfiche I 28.27:9251
- LCCN
- 89600350 //r90
- OCLC
- marcive20672546
- Author
Courtney, Welby G.
- Title
Frictional ignition with coal mining bits / by Welby G. Courtney.
- Imprint
Washington, D.C. (2401 E St., N.W., MS #9800, Washington 20241) : U.S. Dept. of the Interior, Bureau of Mines, 1990.
- Series
Information circular ; 9251
Information circular (United States. Bureau of Mines) ; 9251.
- Bibliography
Includes bibliographical references (p. 25).
- Added Author
United States. Bureau of Mines.
- Gpo Item No.
0637-A (MF)
- Sudoc No.
I 28.27:9251
- Research Call Number
READEX Microfiche I 28.27:9251