Lane, Kenneth F. <br/><br/>
The Economic Definition of Ore  Cut-Off Grades in Theory and Practice 
Kenneth F. Lane 
 - 1st ed. 
 - London, England  Mining Journal Books Limited  1988 
 - x, 149p.  ill.  23cm 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>0900117451 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth Sciences of North America