2 edition of Performance of a novel bump control pillar extracting technique during room-and-pillar retreat coal mining found in the catalog.
Performance of a novel bump control pillar extracting technique during room-and-pillar retreat coal mining
A. A. Campoli
by U.S. Dept. of the Interior, Bureau of Mines in Washington, D.C. (2401 E St., N.W., Washington 20241)
Bibliography: p. 38.
|Statement||by Alan A. Campoli, David C. Oyler, and Frank E. Chase.|
|Series||Report of investigations ;, 9240, Report of investigations (United States. Bureau of Mines) ;, 9240.|
|Contributions||Oyler, David C., Chase, Frank E.|
|LC Classifications||TN23 .U43 no. 9240, TN292 .U43 no. 9240|
|The Physical Object|
|Pagination||ii, 40 p. :|
|Number of Pages||40|
|LC Control Number||88600453|
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