Methods of determining the orientations of bedrock fracture systems in southwestern Pennsylvania and northern West Virginia
By: B. M. Bench, W. P. Diamond, and C. M. McCulloch.
Contributors: Diamond, W. P.; McCulloch, C. M.; United States. Bureau of Mines.
Series: Report of investigations - Bureau of Mines ; 8217; Report of investigations (United States. Bureau of Mines) -- 8217.
Publisher: Dept. of the Interior, Bureau of Mines
Published: 1977
Place of publication: [Washington]
Language: eng
Number of pages: 35
Subjects: Mining geology.; Coal mines and mining -- Pennsylvania.; Coal mines and mining -- West Virginia.
Notes: Bibliography: p. 31-32.