Coates, D.F. <br/><br/>
Development of design specifications for rock bolting from research in Canadian mines /  
D.F. Coates and T.S. Cochrane. 
 - Ottawa :    Dept. of Energy, Mines and Resources, Mines Branch,    1 970. 
 - vii, 29 p. :    ill. ;    28 cm. 
 - Canada. Mines Branch. Research report ;    R 224 .
<br/><br/>Bibliography: (p. 22-24) 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Mine roof bolting.<br/> Rock bolts.
<br/><br/><label>Gov. Doc. Class. No.: </label>G CAN E65 (08) 4/224