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- [1] Mining and preparation of Florida hard-rock phosphate TRANSACTIONS OF THE AMERICAN INSTITUTE OF MINING AND METALLURGICAL ENGINEERS, 1942, 148 : 268 - 276
- [8] BENEFICIATION OF FLORIDA ALUMINUM PHOSPHATE ORE INDUSTRIAL AND ENGINEERING CHEMISTRY, 1954, 46 (08): : 1608 - 1611
- [9] Developments of Mixshields and Hard-Rock TBM (RE)CLAIMING THE UNDERGROUND SPACE, VOLS 1 AND 2, PROCEEDINGS, 2003, : 725 - 730