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Design and development of a pneumatic vibrating-blade planer for mining phosphate rock:a progress report
Design and test operation of a pneumatic vibrating-blade planer :a progress report on phosphate-mining research, 1956-57
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Published Year
1950-1959 (2) *
Subject
Phosphate mines and mining (1)
Phosphate mines and mining--Equipment and supplies--Design (1)
Phosphate rock--West (U.S.) (1)
Author
Howard, T. E. (2) *
Service, Alfred L. (1)
