Table MP 3. Marketable production of phosphate rock for Florida in 1955, 1950 

 and 1965 (U.S. Department of the Interior, Bureau of Mines 1958, 1961, 1967, 

 1972, 1978b, 1981) . 



Year 



Hard rock 



Long tons ($) 



Soft rock 



Long tons 



TIT 



1955 

 1960 

 1965 



91,200 733,800 

 77,000 670,000 

 69,900 693,000 



69,788 452,301 

 47,000 384,000 

 29,216 226,844 



Year 



Land pebble 



Long tons 



JW 



Total 



Long tons 



m 



1955 

 1960 

 1965 



8,586,294 52,454,200 

 12,197,000 81,476,000 

 19,153,835 140,337,900 



8,747,282 53,640,301 

 12,321,000 82,530,000 

 19,252,931 141,257,744 



