Horino, Frank G. <br/><br/>
The use of rock bolts or wire rope to increase the strength of fractured model pillars  
Horino, Frank G. 
 - Washington  Bureau of mines  1971 
 - Report Investigation  7568 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>perno de roca<br/>pilar fracturado<br/>cuerda de alambre
<br/><br/><label>Universal Decimal Class. No.: </label>622.06 (47)