High-Sulfur Pittsburgh Coal: Upgrading in Southwestern Pennsylvania and Northern West Virginia

Author:	Fraser, Thomas
Additional Authors:	Crentz, W. L.
Year:	1950
Document Type:	N/A
Series:	United States Bureau of Mines Reports
Report Number:	Bulletin 483
Link:	https://digital.library.unt.edu/ark:/67531/metadc12641/