PRODUCTION OF PHOSPHATE ROCK IN FLORIDA. lOI 



The Southern Phosphate Development 



Co Ocala and Inverness, Fla. 



State Phosphate Co Bartow, Fla. 



T. A. Thompson Xeals, Fla. 



In addition, The Export Phosphate Co., Mulberry, Fla.^ The 

 Lakeland Phosphate Co., Lakeland, Fla., and The Acme Phosphate 

 Co., Morriston, Fla., have organized and are expecting to mine 

 during 1914. 



Fig. 23. — Sand-clay road, Tallahassee, Bellair road leading into 

 Tallahassee from the south. 



ROAD MATERIALS. 



The road materials of the State include chiefly the limestone, 

 marl, and shell deposits, the flint, chert and gravel, and the sandy 

 or road-making clays. The production of road materials can scarce- 

 ly be estimated. The sandy clays in particular are used locally, no 

 record being kept of the amount handled. The calcareous and 

 siliceous materials find more general usage, the production and 

 value being frequently reported. The value of this class of road- 

 making material is recorded, so far as obtained under the headings 

 "Limestone" and "Gravel." 



At the close of 191 2 the total mileage of improved roads in 

 Florida was approximately 2,848 miles. Of this number 857.8 

 miles are surfaced with marl or crushed stone; 1,408.75 are sur- 

 faced with sand-clay; 218 miles are surfaced with shell; 5.2 miles 



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