THE MINERAL INDUSTRY OF ILLINOIS 
 
 
Table 4.—Employment and injury experience in the mineral industries

2~9 
. 
 
Year and industry 
Average 
 
men 
 
working 
 
daily 
Days 
Active 
Man- 
days 
worked 
(thou- 
sands) 
Man- 
hours 
worked 
(thou- 
sands) 
Number of injuries 
Injury rates per 
million man-hours 
 
 
 
 
 
Fatal Nonfatal 
Fre- Severity quency 
1966: 
Coal                 
Peat                 
Metal              
Nonmetal           
Sand and gravel  
Stone              
 Total 1            1967: ~ 
Coal                 
Peat                 
Metal                
Nonmetal            
Sand and gravel       
Stone                
Total 1                
8,367 
19 
65 
1,210 
1,659 
3,513 
255 
117 
251 
274 
227 
270 
2,132 
2 
16 
331 
377 
948 
16,629 
19 
130 
2,690 
3,248 
7,819 
 8 652 - 1  19 1 87 - - - 41 3 122 
39.69 4,561. 
 52.65 53 
145.78 675 
32.72 3,68012.62 99915.99 2,900 
 
14,833 
257 
3,807 
30,534 
12 922 
30.59 3,660 
 
8,500 
23 
50 
1,245 
1,515 
3,695 
254 
217 
252 
261 
233 
269 
2,156 
5 
13 
325 
353 
995 
16,720 
46 
105 
2,652 
3,047 
8,235 
 19 700  2  4  113 4 51  135 
43.00 8.618 
 43.50 174 
 38.23 210 
 42.60 707 
 18.05 11,954 
 16.39 639 
 
15,030 
256 
3,846 
30,805 
 23 1,005 
 33.37 6,093 
Preliminary. 
1 Data may not add to totals shown because of independent rounding. 
 
REVIEW BY MINERAL COMMODITIES 
 
MINERAL FUELS 
 
 Coal (Bituminous).—Illinois ranked fourth in the Nation in bituminous
coal production with an output of 65.1 million tons valued at $253.0 million,
representing slight increases over the 1966 figures. The value of bituminous
coal production contributed 40 percent to the total value of minerals produced
in the State. 
 Illinois consumed over 58 percent of its coal production. About 41 percent
was shipped to consumers in Indiana, Michigan, Wisconsin, Minnesota, Iowa,
Missouri, and Kentucky. Electric utilities consumed nearly 70 percent of
the output, general manufacturing and processing industries nearly 24 percent,
and retail dealers and coke and gas plants about 3 percent each. Sales to
electic utilities increased nearly 3 million tons over those of 1966, while
sales to general manufacturing and processing industries declined nearly
1 million tons. Shipments to coke and gas plants were about the same as in
1966. Shipments to all other consumers declined. 
 About 82 percent of the coal was shipped by rail, about 8 percent by truck,
5 percent by water, and 5 percent by other means, including that transported
from the mine to point of use by conveyor or tram. Over one-fourth of the
rail shipments were by unit trains. 
 Total Illinois coal consumption was 46.? million tons, of which 38.5 million
tons came from within the State. Total consumption was up less than 1 percent,
hut that portion supplied by Illinois coal mines increased over 2 percent.
Much of the in~ crease in consumption was due to electric utilities which
increased their rate of use over 6 percent, to 29.5 million tons. 
 Production was reported from 75 mines in 25 counties, excluding mines with
less than 1,000 tons of annual production. Over 93 percent of the total output
came from 
12 counties with production in excess of 
1 million tons each. Those counties, in order of rank, were Perry, Franklin,
St. Clair, Fulton, Williamson, Christian, Montgomery, Saline, Jefferson,
Randolph, Knox, and Peoria. 
 The 43 strip mines accounted for 57 percent of the total State production,
and the 32 underground mines contributed the remainder. Production from strip
mines increased 3 percent over that of 1966 and that from underground mines
increased 2 percent. The average mine value was $3.88 per ton, up from $3.85
in 1966. 
 All but a minor fraction of the coal produced underground was loaded by
machines; these included 75 mobile loaders and 65 continuous miners. Equipment
used in strip mines included 126 power shovels,