STATISTICS ON MINERAL PRODUCTION 
25 
TABLE 5 
MISCELLANEOUS STATISTICS OB MINES AND QUARRIES IN BLORIDA, 1919 
Phos¬ 
phate 
rock 
Ful¬ 
ler’s 
earth 
Lime¬ 
stone 
Others 
Total 
Number of mines and quarries. 
40 
5 
6 
4 
55 
Capital invested . 
55,740 
1,382 
116.4 
828.3 
58,067 
Principal expenses: 
''7 
Salaries and wages. 
2,922 
534 
96.7 
220.8 
3,774 
U 
Salaried officers .. 
174 
23 
3.6 
24.8 
225 
Superintendents and managers. 
170 
25 
9.8 
9.0 
214 
~o 
Technical employees . 
76 
4 
0 
0 
80 
-g 
Clerks, etc. 
131 
6 
1.7 
8.7 
147 
Laborers . 
2,372 
476 
81.7 
178.3 
3,108 
Supplies and materials. 
1,455 
279 
34.4 
67.2 
1,836 
CS 
Fuel. 
1,278 
267 
9.9 
59.0 
1,613 
P 
Power .. 
70 
0 
4.4 
0 
74 
f . 
Royalties and rents. 
129 
5 
5.6 
1.5 
141 
H 
Taxes . 
275 
117 
0.7 
15.8 
409 
Contract work . 
115 
6 
0 
0 
121 
Value of products . 
6,679 
1,780 
177.2 
340.8 
8,976 
Persons engaged (total). 
2,585 
748 
124 
237 
3,694 
Firm members, etc. . .... 
5 
0 
3 
0 
8 
Salaried officers . 
27 
6 
3 
8 
44 
Superintendents and managers. 
65 
16 
5 
5 
91 
Technical employees .... 
52 
2 
0 
0 
54 
Clerks, etc. 
106 
7 
2 
10 
125 
Laborers (average number) . .. 
2,330 
717 
111 
214 
3,372 
Average annual earnings (dollars) : 
Officers . 
6,450 
3,835 
1,200 
3,094 
5,115 
Superintendents and managers. 
2,610 
1,595 
1,953 
1,802 
2,345 
Technical employees.... 
1,463 
2,100 
1,490 
Clerks, etc. 
1,230 
858 
835 
873 
1,178 
Laborers .. 
1,018 
664 
736 
835 
923 
Land controlled (acres). 
188,002 
4,518 
236 
4,629 
197,385 
Mineral land operated (acres).. 
108,925 
4,260 
236 
4,629 
118,050 
Aggregate horsepower used.... 
40,996 
1,880 
490 
1,603 
44,969 
Fuel used: 
■* - 
Hard coal (long tons). 
0 
100 
0 
0 
100 
Soft coal (short tons). 
19,621 
8,592 
390 
4,085 
32,688 
Coke (short tons) . 
146 
0 
0 
0 
146 
Wood (cords) . 
32,022 
9,630 
2,052 
863 
44,567 
Fuel oils (barrels) ... 
657,039 
79,392 
0 
51,000 
787,431 
Gasoline, etc. (barrels). 
10,786 
712 
0 
112 
11,610 
