Dixon, J. D. <br/><br/>
Procedures for determining support of excavations in highly yielding ground / 
by J.D. Dixon, M.A. Mahtab, and T.W. Smelser. 
 - Pittsburgh, Pa. (P.O. Box 18070, Pittsburgh 15236)   U.S. Dept. of the Interior, Bureau of Mines,  1985. 
 - 19 p. :  ill. ;  28 cm. 
 - Report of investigations ;  8990 .
 - Report of investigations (United States. Bureau of Mines) ;  8990. .
<br/><br/>Bibliography: p. 18. 
<br/><br/><label>LCCN: </label>85600170  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ground control (Mining)--Mathematical models.<br/>Ground control (Mining)--Data processing.<br/>Rock deformation--Mathematical models.<br/>Rock deformation--Data processing.<br/>Longwall mining--Mathematical models.<br/>Longwall mining--Data processing.
<br/><br/><label>LC Class. No.: </label>TN23  TN288  / .U43 no. 8990 
<br/><br/><label>Dewey Class. No.: </label>622 s  622/.28 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 28.23:8990