Mine subsidence--extent and cost of control in a selected area.
Series: [United States. Bureau of Mines] Information circular ;; 8507; Information circular (United States. Bureau of Mines) ;; 8507.
Publisher: U.S. Bureau of Mines; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1971
Place of publication: [Washington]
Language: eng
Number of pages: 32
Subjects: Subsidences (Earth movements); Mining engineering.; Coal mines and mining -- Pennsylvania.
Notes: Bibliography: p. 25.