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Author

McCulloch, C. M. (Charles M.)

Title Geologic factors causing roof instability and methane emission problems [electronic resource] : the Lower Kittaning coalbed, Cambria County, Pa. / by C.M. McCulloch and Maurice Deul.

Imprint

[Washington, D.C.?] : U.S. Dept. of the Interior, Bureau of Mines, [1973]

Connect to
Connect to https://permanent.fdlp.gov/lps97410/ri7769.pdf

Copies

Location	Call No.	OPAC Message	Status
Axe Federal Documents Online	HE 20.7131:7769	---	Available

Description	ii, 25 p. : digital, PDF file
Series	Report of investigations ; 7769
	Report of investigations (United States. Bureau of Mines) ; 7769.
System Details	Mode of access: Internet at the National Institute for Occupational Safety and Health web site.
Note	Title from title screen (viewed on July 18, 2008).
Subject	Mine roof control.
Added Author	Deul, Maurice.
	United States. Bureau of Mines.
Other Form:	McCulloch, C. M. (Charles M.). Geologic factors causing roof instability and methane emission problems 25 p. (OCoLC)12340603
Gpo Item No.	0499-F-22 (online)
Sudoc No.	HE 20.7131:7769