Wade, Lewis V. <br/><br/>
Mine roof simulator :  definition and discussion of parameters / 
by Lewis V. Wade. 
 - Washington, D.C. :  U.S. Dept. of the Interior,  [1975] 
 - 18 p. :  ill. 
 - Report of investigations / Bureau of Mines, U.S. Department of the Interior ;  7971 .
 - Report of investigations (U.S. Department of the Interior.  7971 .
<br/><br/><label>LCCN: </label>92045002     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal mines and mining--Simulation methods.