Langwall gob degasification with surface ventilation boreholes above the Lower Kittanning coalbed
By: by T. D. Moore, Jr., Maurice Deul, and Fred N. Kissell ; Pittsburgh Mining and Safety Research Center
Contributors: Deul, Maurice, jt. auth; Kissel, Fred N., jt. auth; United States. Bureau of Mines
Series: Report of investigations - Bureau of Mines ; 8195
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1976
Place of publication: Washington
Language: eng
Number of pages: 13
Subjects: Mine ventilation; Methane
Notes: Bibliography: p. 13