Table MP 4. Phosphate reserves and resources (million metric tons) for the 

 world, the United States and central Florida (U.S. Department of the Interior, 

 Bureau of Mines 1978b) . 



Location 



Measured Identified 

 reserves sub-economic resources 



Total 

 resources 



74,395 



4,408 



1,542 



498 



195 



475 



314 



80 



^ 1976 figures 

 ° 1973 figures 



