Table MP 5. Active phosphate producers in Southwest Florida (Florida Depart- 

 ment of Environmental Regulation, Bureau of Water Management 1980a). 



County and producer 



Hillsborough County 



Big Four Mine 

 Borden Chemical Co . 



Lonesome Mine 

 Brewster Phosphates 



Haynesworth Mine 

 Brewster Phosphates 



Kingsford Mine 

 Brewster Phosphates 



Table MP 6. Estimated truck shipments between Tampa and phosphate plants, 

 annual tonnages and daily loads for 1973 and 1976 (U.S. Department of 

 the Interior, Bureau of Mines 1978a) . 



Short tons . 



