Barrier pillars in the western middle field : anthracite region of Pennsylvania / by S. H. Ash [and others]

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Bibliographic Details
Corporate Author:	United States. Bureau of Mines
Other Authors:	Ash, S. H. (Simon Harry), 1889-
Format:	Government Document Book
Language:	English
Published:	Washington, D.C. : U.S. G.P.O., 1953.
Series:	Bulletin (United States. Bureau of Mines) ; 521.
Subjects:	Mine water. Barrier pillars. Coal mines and mining.

PASCAL Offsite

Holdings details from PASCAL Offsite
Call Number:	TN23 .U4 no. 521 TN318.A7
TN23 .U4 no. 521 TN318.A7	Available Place a Hold