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Effects of abandoned multiple seam workings on a longwall in Virginia

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Bibliographic Details
Main Author:	Chekan, G. J. (Gregory J.)
Corporate Author:	United States. Bureau of Mines
Other Authors:	Matetic, Rudy J., Dwyer, David L.
Format:	Book
Language:	English
Published:	[Washington, D.C. (2401 E St., NW, MS #9800, Washington, 20241)] : [U.S. Dept. of the Interior, Bureau of Mines], [1989]
Series:	Report of investigations (United States. Bureau of Mines) ; 9247.
Physical Description:	15 pages : illustrations ; 28 cm.
Subjects:	Mine subsidences -- Virginia -- Dickenson County. Longwall mining -- Virginia -- Dickenson County.

Description
Item Description:	Distributed to depository libraries in microfiche.
Physical Description:	15 pages : illustrations ; 28 cm.
Bibliography:	Includes bibliographical references (page 14).