McClelland, G. E. <br/><br/>
Improvements in heap leaching to recover silver and gold from low-grade resources / 
G.E McClelland and J.A. Eisele. 
 - [Washington, D.C.] :  U.S. Dept. of the Interior, Bureau of Mines,  1982. 
 - ii, 26 p. :  ill. ;  27 cm. 
 - Report of investigations ; 8612. .
 - Report of investigations (United States. Bureau of Mines) ; 8612 .
<br/><br/><label>LCCN: </label>81607060 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gold ores.<br/>Silver ores.<br/>Leaching.<br/>Cyanide process.