Cumming, James D. <br/><br/>
Diamond drill handbook / 
James D. Cumming. 
 - Toronto:   J. K. Smit & Sons of Canada,   [c1956].  
 - xxx, 655 p. :  ill., tables, maps ;  24 cm.  +1 table + 1 chart. 
<br/><br/>Includes index (p. 645-655). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rock-drills<br/>Diamonds, Industrial
<br/><br/><label>Dewey Class. No.: </label>622.2