Martinez, G. M. <br/><br/>
Recovery of byproduct heavy minerals from Oregon and Washington sand and gravel operations 
by G.M. Martinez, J.M. Gomes, and M.M. Wong 
 - Washington  U.S. Dept. of the Interior, Bureau of Mines  1981 
 - 14p.  ill.  27cm. 
 - Report of investigations  8563 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Quarries and quarrying--By-products--Oregon<br/>Quarries and quarrying--By-products--Washington (State)<br/>Heavy minerals--Oregon<br/>Heavy minerals--Washington (State)
<br/><br/><label>Dewey Class. No.: </label>622  / .751