WORLD PRODUCTION OF PHOSPHATE ROCK. 99 



PRODUCTION OF PHOSPHATE ROCK IN FLORIDA 



DURING 1913.* 



STATISTICS ON PRODUCTION COLLECTED IN CO-OPERATION WITH THE 



U. S. GEOLOGICAL SURVEY. 



The production of land pebble phosphate in Florida, which has 

 steadily increased during the past several years, showed a further 

 gain during 191 3, the output having for the first time exceeded two 

 million tons. The production of hard rock phosphate, on the con- 

 trary, showed a slight decrease, having fallen slightly below one- 

 half million tons. However, notwithstanding the decline in hard 

 rock mining, the total production for the State during 19 13 was 

 greater than that for any preceding year, having exceeded two and 

 one-half million tons, with a valuation in excess of nine and one- 

 half million dollars. 



The total shipments of phosphate rock during 19 13 as reported 

 by the producers was 2,545,276 long tons, of which 2,055,482 tons 

 were land pebble, including a small consignment of river pebble, 

 and 489,794 tons were hard rock phosphate. The river pebble in- 

 cluded with these shipments represents rock on hand from previous 

 years, as no river pebble is being produced at present. The exports 

 of phosphate rock from Florida to foreign countries during 19 13 

 as shown by returns from the various shipping points, amounted to 

 1,364,296 tons, from which it appears that slightly less than one- 

 half of the phosphate mined in Florida during 1913 was consigned 

 for use within the Unit.ed States. The rock consigned for domestic 

 use is almost wholly land pebble phosphate, practically all of the hard 

 rock being exported. The record of the export shipment is from 

 the American Fertilizer of January 24, 1914. 



Pebble phosphate from Florida sold at the mines during 191 3 

 at $2.75 to $4.00 per ton according to grade, while the hard rock 

 phosphate sold at $4.00 to $5.00 per ton. The actual value of the 

 phosphate shipped from Florida during 1913 approximates $9,563,- 

 084. 



*Press Bulletin No. 5, Florida State Geol. Survey. Production of Phos- 

 phate Rock in Florida During 1913, hy E. H. Sellards, Issued May 20, 1914. 



