Bartels, John R. <br/><br/>
Comparative laboratory evaluation of resin-grouted roof bolt elements / 
by John R. Bartels and Deno M. Pappas. 
 - Washington, D.C. :  U.S. Dept. of the Interior, Bureau of Mines,  1985. 
 - 20 p. :  ill. ;  28 cm. 
 - Report of investigations ;  8924 .
 - Report of investigations (United States. Bureau of Mines) ;  8924. .
<br/><br/>Bibliography: p. 14. 
<br/><br/><label>LCCN: </label>84600267  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mine roof bolts, Resin--Testing.
<br/><br/><label>LC Class. No.: </label>TN23  TN289.3  / .U43 no. 8924 
<br/><br/><label>Dewey Class. No.: </label>622 s  622/.28 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 28.23:8924