Author: | Barton, T. M. |
---|---|
Additional Authors: | Mark, Christopher. |
Year: | 1989 |
Document Type: | BMRA |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
SUDOC: | I 28.23:9283 |
Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
Report Number: | 9283 |
Subjects: | Ground control (Mining) |
Longwall mining--Kentucky--Letcher County | |
Columns--Testing | |
Link: | https://hdl.handle.net/2027/mdp.39015078475517 |