- Additional Authors
- United States. Bureau of Mines.
- Description
- ii, 53 p. : ill., map; 28 cm.
- Series Statement
- Information circular ; 9247
- Uniform Title
- Information circular (United States. Bureau of Mines) ; 9247.
- Subjects
- Note
- Distributed to depository libraries in microfiche.
- Bibliography (note)
- Includes bibliographical references (p. 44-46).
- Call Number
- READEX Microfiche I 28.27:9247
- LCCN
- 89600380
- OCLC
- marcive20827038
- Author
Mark, Christopher.
- Title
Pillar design methods for longwall mining / by Christopher Mark.
- 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 ; 9247
Information circular (United States. Bureau of Mines) ; 9247.
- Bibliography
Includes bibliographical references (p. 44-46).
- Added Author
United States. Bureau of Mines.
- Gpo Item No.
0637-A (MF)
- Sudoc No.
I 28.27:9247
- Research Call Number
READEX Microfiche I 28.27:9247