Lane, Kenneth F. <br/><br/>
The economic definition of ore :  cut-off grades in theory and practice / 
by Kenneth F. Lane. 
 - London :  Mining Journal Books,  1988. 
 - x, 149 p. 
<br/><br/>
<br/><br/><label>ISBN: </label>0900117451 
<br/><br/><label>LCCN: </label>90013154 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Assaying.<br/>Ores--Sampling and estimation.<br/>Ore-deposits--Economics.<br/>Mines and mineral resources.<br/>Mineralogy, Determinative.<br/>Metallurgical analysis.<br/>Geology, Economic.