Geology and methane content of the upper Freeport coalbed in Fayette County, Pa.
By: by Peter F. Steidl
Contributors: United States. Bureau of Mines
Series: Report of investigations - Bureau of Mines ; 8226 r
Publisher: Dept. of the Interior, Bureau of Mines
Published: 1977
Place of publication: [Washington]
Language: eng
Number of pages: 17
Subjects: Coal -- Geology -- Pennsylvania -- Fayette County; Methane; Mine gases
Notes: Includes appendix

Bibliography: p. 15-16