50 
 
 
 
 
 
 
40 
U) 30 
 
0 
 
0 
-D 
 
C 
0 
 
 
E 20 
 
Lii 
 
-J 
 
4 
> 
THE MINERAL INDUSTRY OF SOUTH CAROLINA 
     707 
 1950 1955 1960 1965 970 
Figure 1.—Value of stone, and total value of mineral production in
South Carolina. 
 
 
 
Table 4.—Employment and injury experience in the mineral industries

 Average Days Man-days  Number of Injury rates per 
 Year and industry men  Active worked  Man-hours  injuries  million man-hours

 working (thousands)  worked 
 daily  (thousands) Fatal Nonfatal Frequency Severity 
 
 
1966: 
 Nonmetal and peat 952 265 253 2,073 48 23.16 501 
 Sand and graveL_ 391 250 98 793 17 21.44 518 
 Stone 817 256 209 1,712 28 16.35 7,759 
 Total '  2,160 259 559 4,578 93 20.31 3,219 
 
1967: ~ 
 Nonmetal and peat 1,005 250 251 2,008  35 17.43 2,655 
 Sand and graveL_ 385 246 94 769  14 18.22 403 
 Stone 840 268 225 1,870 1 42 23.00 3,582 
 Total 2,230 256 570 4,647 1 91 19.80 2,656 
 
P Premilinary. 
1 Data may not add to totals shown because of independent rounding.