Matetic, Rudy J. <br/><br/>
Pillar load transfer associated with multiple-seam mining / 
by R.J. Matetic, G.J. Chekan, and J.A. Galek. 
 - Pittsburgh, Pa. :  U.S. Dept. of the Interior, Bureau of Mines,  1987. 
 - 23 p. :  ill. 
 - Report of investigations (United States. Bureau of Mines) ;  9066 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pillaring (Mining)<br/>Mine subsidences--West Virginia--Raleigh County.<br/>Coal mines and mining--West Virginia--Raleigh County.
<br/><br/><label>Dewey Class. No.: </label>622.334