Thick-seam mining in the western United States--geological considerations
By: by D.L. Boreck.
Series: Information circular ;; 9116.; Information circular (United States. Bureau of Mines) ;; 9116.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1986
Place of publication: Pittsburgh, Pa. (P.O. Box 18070, Pittsburgh 15236)
Language: eng
Number of pages: 18
Subjects: Thick seam mining -- West (U.S.); Coal -- Geology -- West (U.S.)
Notes: Bibliography: p. 17-18.