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Multiple zone mining plus beneficiation of western phosphate rock : a cost estimate and comparison with selective mining / by Richard N. Spencer
Author:
Spencer, Richard N.
Published:
[Washington, D.C.] : U.S. Dept. of Interior, Bureau of Mines, [1971]
Physical Description:
18 pages : illustrations ; 26 cm.
Additional Creators:
United States. Bureau of Mines
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Series:
Report of investigations (United States. Bureau of Mines) ; 7512
Report Numbers:
I 28.23:7512
Subject(s):
Phosphate mines and mining
—
Costs
Ore-dressing
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Costs
Note:
"May 1971"--Cover.
Bibliography Note:
Includes bibliographical references.
Binding notes:
TN23.U43 no.7501-7512 c.1 (Book) bound in
Autoclave and ambient pressure leaching of Lake Superior manganiferous ores / by Vance G. Leak
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| catkey: 9615043