Holdings: Reducing hazards in underground coal mines through the recognition and delineation of coalbed discontinuities caused by ancient channel processes

Main Author:	Kertis, Carla A.
Other Authors:	United States. Bureau of Mines.
Format:	Electronic
Language:	English
Published:	[Pittsburgh, Pa.?] : U.S. Dept. of the Interior, Bureau of Mines, [1985]
Physical Description:	23 pages : digital, PDF file.
Series:	Report of investigations (United States. Bureau of Mines) ; 8987.
Subjects:	Coal -- Geology -- Pennsylvania -- Indiana County. Coal -- Geology -- Pennsylvania -- Armstrong County. River channels. Coal mines and mining -- Pennsylvania -- Indiana County -- Safety measures. Coal mines and mining -- Pennsylvania -- Armstrong County -- Safety measures.
Online Access:	https://purl.fdlp.gov/GPO/LPS98493

https://purl.fdlp.gov/GPO/LPS98493

Location	Call Number:	Status
CMU Gov Pub Electronic	HE 20.7131:8987	Available