Single-entry development for longwall mining
Subtitle: research approach and results at Sunnyside No. 2 mine, Carbon County, Utah
By: by Melvin E. Poad, Galen G. Waddell, and Earl L. Phillips
Contributors: Waddell, Galen G., joint author; Phillips, Earl L., joint author; United States. Bureau of Mines
Series: Report of investigations - Bureau of Mines ; 8252
Publisher: Dept. of the Interior, Bureau of Mines
Published: 1977
Place of publication: [Washington]
Language: eng
Number of pages: 23
Subjects: Coal mines and mining; Tunneling
Notes: Bibliography: p. 29