STATISTICS ON MINERAL PRODUCTION 



29 



* "The value of the phosphate shipped from Florida in 1918, ac- 

 cording to returns from the producers, is as follows : Land peb- 

 ble, $5,565,928; hard rock, including soft phosphate, $524,178, 

 making a total valuation of $6,090,106. The value of shipments 

 during 1917 was $5,464,493. An increase of more than $600,000 

 is thus indicated in total value of shipments for the year 191 8 over 

 that of 1917. The total production of phosphate rock in Florida 

 since the beginning of the industry in 1888 to the close of 1918, 

 according to statistics collected by the Florida Geological Survey 

 and the United States Geological Survey, is estimated to be 

 35,210.314 tons, with a total valuation of $129,055,787. 



"The quantity of rock mined during the year is necessarily not 

 the same as the amount shipped, for there are variable amounts on 

 hand and held in storage at the close of each year. The total quan- 

 tity of phosphate mined in Florida in 1918 was 1,884,891 tons. 

 The quantity mined in 191 7 was 2,328,138 tons. This decreased 

 output of 443.247 tons in I9i'8, as compared with 191 7, reflects 

 the conditions due to our entry into the war, such as difficulty in 

 getting labor, restrictions placed on and subsequent shortage and 

 increased cost of fuel and lack of shipping facilities." 



SUMMARY OF SHIPMENT OF PHOSPHATE IN FLORIDA FROM 1914 TO 1918, 



INCLUSIVE 



Pebble Rock- 

 Exported 

 Domestic- 



Total shipment- 

 Hard Rock : 



Exported 



Domestic 



Total shipment 



Pebble and Hard Rock Combined: 



Exported 



Domestic 



Tot^l shipment- 



1914 



625,8'21 

 1.203.381 



1,829.202 



303.172 

 6.517 



309.689 



928 993 

 1.209.898 



2.138,891 



1915 



185,846 

 1.122.635 



1,308,481 



43,314 

 6.816 



50,130 



229,160 

 1,129.451 



1,358,611 



1916 



172,427 

 1.296.331 



1,468.758 



28,045 

 19,042 



47,087 



200.472 

 1.315.373 



1,5'5,845 



1917 



138,010 

 1,865.981 



2,003.991 



12,403 

 6.205 



* 18. 608 



150,413 

 1,872.186 



2.022.599 



Total shipments from beginning of mining in 1888 to 1918, inc.. 35,210.278. 



1918 



64,5.58 

 1,932.289 



1,996,847 



57,771 

 12,612 



*70,383 



122.330 

 ] ,932.288 



2.067,930 



*lncludes soft rock phosphate. 



