Martinez, G. M. <br/><br/>
Recovery of byproduct heavy minerals from sand and gravel operations in Oregon and Washington / 
by G.M. Martinez, J.M. Gomes, and M.M. Wong. 
 - [Washington, D.C.?] :  U.S. Dept. of the Interior, Bureau of Mines,  1981. 
 - 14 p. :  ill., 1 map ;  27 cm. 
 - Report of investigations ;  8563 .
 - Report of investigations (United States. Bureau of Mines) ;  8563. .
<br/><br/>Bibliography: p. 14. 
<br/><br/><label>LCCN: </label>81006080  
<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>LC Class. No.: </label>TN23  TN939  / .U43 no. 8563 
<br/><br/><label>Dewey Class. No.: </label>622 s  622/.751 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 28.23:8563