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Multislice mining for thick western coal seams /

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Bibliographic Details
Main Author: Hackett, T. D.
Other Authors: Boreck, D. L. (Donna L.), Clarke, D. R.
Format: Unknown
Language:English
Published: PGH [i.e. Pittsburgh] Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1989.
Series:Information circular (United States. Bureau of Mines)
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245 1 0 |a Multislice mining for thick western coal seams /  |c by T.D. Hackett, D.L. Boreck, and D.R. Clarke. 
260 0 |a PGH [i.e. Pittsburgh] Pa. :  |b U.S. Dept. of the Interior, Bureau of Mines,  |c 1989. 
300 |a ii, 27 p. ;  |b ill. 
490 1 |a Information circular 
650 0 |a Coal mines and mining  |z West (U.S.) 
700 1 0 |a Boreck, D. L.  |q (Donna L.) 
700 1 0 |a Clarke, D. R. 
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