Reducing hazards in underground coal mines through the recognition and delineation of coalbed discontinuities caused by ancient channel processes
By: by Carla A. Kertis.
Series: Report of investigations ;; 8987; Report of investigations (United States. Bureau of Mines) ;; 8987.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1985
Place of publication: Pittsburgh, Pa
Language: eng
Number of pages: 23
Subjects: Coal -- Geology -- Pennsylvania -- Indiana County.; Coal -- Geology -- Pennsylvania -- Armstrong County.; River channels.; Coal mines and mining -- Pennsylvania -- Indiana County -- Safety measures.; Coal mines and mining -- Pennsylvania -- Armstrong County -- Safety measures.
Notes: Bibliography: p. 21-23.