Steckley, Robert C. <br/><br/>
Blasting tests in a porphyry copper deposit in preparartion for in situ extraction 
Steckley, Robert C.; D'Andrea, Dennis V.; Larson, William C. 
 - Washington  Bureau of mines  1975 
 - 47 p. 
 - RI 8070 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA<br/>MINING
<br/><br/><label>Subjects--Index Terms: </label>COBRE TALADRO DEL NUCLEO VOLADURA COPPER CORE DRILLING BLASTING 
<br/><br/><label>Universal Decimal Class. No.: </label>622