Selected geologic factors affecting mining of the Pittsburgh coalbed /

Bibliographic Details
Corporate Author:	United States. Bureau of Mines
Other Authors:	McCulloch, C. M. (Charles M.)
Format:	Government Document Book
Language:	English
Published:	[Pittsburgh, Pa.] : U.S. Dept. of the Interior, Bureau of Mines, [1975]
Series:	Report of investigations (United States. Bureau of Mines) ; 8093.
Subjects:	Coal mines and mining > Pennsylvania. Coal mines and mining > West Virginia.
Online Access:	https://purl.fdlp.gov/GPO/LPS98445