Longwall gate road roof instability and methods of control in the lower Kittanning Coalbed of Central Pennsylvania
An edition of Longwall gate road roof instability and methods of control in the lower Kittanning Coalbed of Central Pennsylvania (1992)
By Eric R. Bauer
Publish Date
1992
Publisher
U.S. Dept. of the Interior, Bureau of Mines
Language
eng
Pages
20
1-1 of 1 Editions
Longwall gate road roof instability and methods of control in the lower Kittanning Coalbed of Central Pennsylvania
Language: eng
Pages: 20
Published In: 1992
Publisher: U.S. Dept. of the Interior, Bureau of Mines