Characterization and effectiveness of remining abandoned coal mines in Pennsylvania.

Bibliographic Details
Main Author:	Hawkins, Jay W.
Corporate Author:	United States. Bureau of Mines
Format:	Government Document Microform Book
Language:	English
Published:	[Washington, D.C.?] : U.S. Dept. of the Interior, Bureau of Mines, 1995.
Series:	Report of investigations (United States. Bureau of Mines) ; 9562.
Subjects:	Coal mines and mining > Environmental aspects > Pennsylvania. Abandoned coal mines > Environmental aspects > Pennsylvania.