Preparation characteristics of coal from Allegheny County, Pa.

Author:	Gray, T. E.
Additional Authors:	Palowitch, Eugene R.
Year:	1959
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:5492
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	5492
Subjects:	Coal preparation
	Coal--Pennsylvania--Allegheny County
Link:	https://hdl.handle.net/2027/mdp.39015078542266