Martinez, G. M.
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. - Report of investigations - Bureau of Mines ; 8563 . - Report of investigations (United States. Bureau of Mines) ; 8563. .
90052068
Quarries and quarrying--By-products.--Oregon
Quarries and quarrying--By-products.--Washington (State)
Heavy minerals--Oregon.
Heavy minerals--Washington (State)
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. - Report of investigations - Bureau of Mines ; 8563 . - Report of investigations (United States. Bureau of Mines) ; 8563. .
90052068
Quarries and quarrying--By-products.--Oregon
Quarries and quarrying--By-products.--Washington (State)
Heavy minerals--Oregon.
Heavy minerals--Washington (State)