Determining the source of longwall gob gas
Subtitle: Lower Kittanning Coalbed, Cambria County, PA
By: by William P. Diamond, James P. Ulery, and Stephen J. Kravits.
Contributors: Ulery, J. P.; Kravits, S. J.; United States. Bureau of Mines.
Series: Report of investigations -- 9430.; Report of investigations (United States. Bureau of Mines) -- 9430.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1992
Place of publication: Washington, D.C. (810 7th St., N.W., MS#9800, Washington 20241-0001)
Language: eng
Format: Microform
Number of pages: 15
Subjects: Firedamp -- Pennsylvania -- Cambria County.; Coal mine waste -- Pennsylvania -- Cambria County.; Longwall mining -- Pennsylvania -- Cambria County.; Mine ventilation.
Notes: Distributed to depository libraries in microfiche.

Shipping list no.: 93-0084-M.

Includes bibliographical references (p. 13).

Microfiche. [Washington, D.C.?] : Supt. of Docs., U.S. G.P.O., [1992] 1 microfiche : negative.