STATISTICS ON MINERAL PRODUCTION 
29 
of the state, production that year amounting to 2,545,276 long tons, with 
a valuation of $9,563,084. It is thus seen the output record for 1920 ex¬ 
ceeds the former one by 824,108 tons and in value by $9,901,278. The 
quantity of phosphate rock mined and marketed during 1920 from the 
whole United States was 4,103,982 long tons. Of this amount, from the 
figures above given, it will be seen that Florida produced 82 per cent. 
“The following table gives the production and value of the three va¬ 
rieties of phosphate rock produced in Florida for the years 1919 and 
1920: 
1919 
Variety 
Quantity 
(Long Tons) 
Value 
Average 
Value 
Per Ton 
Hard rock . 
285,467 
14,498 
1,360,235 
$2,452,563 
196,318 
5,149,048 
$ 8.59 
13.54 
Soft rock. 
Land pebble ... 
3.79 
1,660,200 
$7,797,929 
$ 4.70 
Variety 
1920 
Quantity 
(Long Tons) 
Value 
Average 
Value 
Per Ton 
Hard rock . 
400,249 
$4,525,191 
$11.31 
Soft rock . 
13,953 
190,551 
13.66 
Land pebble . 
2,955,182 
14,748,620 
4.99 
3,369,384 
$19,464,362 
$ 5.78 
“The recovery of the industry from the depressing conditions attribu¬ 
table to the recent world war is shown both in the largely increased pro¬ 
duction from the pebble phosphate fields and the very decided increase 
from the hard rock fields, as compared with the output for several pre¬ 
ceding years. The amount of hard rock phosphate marketed during 
1920 is evidence of the increased demand for this high-grade rock. Soft 
phosphate maintained the record set in 1919, practically the same quan¬ 
tity being marketed in 1920 as in that year. 
“The most striking increase in production for the year was from the 
pebble phosphate field, where the amount marketed totaled 1,594,947 
tons more than in 1919. The average value per ton for the pebble rock 
