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Increased recoveries of phosphate in the land-pebble district of Florida
Gravity concentration on certain Florida phosphatic sands
Pebble-phosphate mine accident experience
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Published Year
1930-1939 (3) *
Subject
Phosphates--Florida (3) *
Industrial accidents--Florida (1)
Mine safety--Florida (1)
Author
Lawrence, H. M. (2)
Cash, Frank E. (1)
Dempsey, Claud P. (1)
O'Meara, R. G. (1)
