Year and industry 
Average 
men 
working 
daily 
Days 
Active 
Man- 
days 
worked 
(thou- 
sands) 
Man- 
hours 
worked 
(thou- 
sands) 
Number of injuries 
——-—-———— Fatal Non- 
fatal 
Inquiry rates per million man-hours 
—-—————— Fre- Severity quency 
1966: 
Coal               
Metal              
Nonmetal and native asphalt           
Sandandgravel      
Stone              
Total'           
1967: P 
Coal               
Metal              
Nonmetal and native asphalt           
Sand and gravel     Stone              
Total'           
398 
2,615 
 
1,126 
626 
3,848 
257 
273 
 
238 
237 
276 
102 
713 
 
268 
148 
1,060 
783 
5,703 
 
2,160 
1,233 
8,682 
 1 81 8 275 
 
 63 
 1 14 8 171 
 40.86 8,684 48.75 5,049 
 29.17 756 12.17 5,274 20.62 6,067 
 
8,613 
266 
2,292 
18,560 
13 554 
30.55 5,194 
 
380 
2,290 
 
985 
555 
4,215 
276 
271 
 
230 
241 
262 
105 
622 
 
226 
134 
1,106 
778 
4,974 
 
1,822 
1,139 
9,254 
 32 
 2 188 
 
 56 
 16 
 3 176 
 41.13 1,069 38.20 3,323 
 30.73 2,370 14.05 1,104 19.34 2,734 
 
8,425 
260 
2,192 
17,967 
5 468 
26.33 2,685 
P Preliminary. 
' Data may not add to totals shown because of independent rounding. 
 THE MINERAL INDUSTRY OF MISSOURI 469 
 
Missouri and were coordinated with the developing mineral industry of the
State. The Missouri Highway Commission allocated about $183 million for State
highway construction and improvements during the year, compared with $170
million in 
1966. 
 A long-range study by the Missouri State Highway Department, made for the
American Association of State Highway Officials, revealed that total highway
and street construction needs for Missouri, amounting to $5.6 billion, will
accumulate between 1967 and 1985. Construction needs represent a tremendous
potential market for such mineral materials as stone, sand and gravel, and
cement. 
 The St. Louis-San Francisco Railway Co. dedicated its new $6.5 million "Lead
Belt Line." The new rail spur moved its first load of lead concentrates on
July 3, 1967, 
from St. Joseph Lead Co.'s Viburnum mine and mill; the shipment was destined
for the company's lead smelter at Herculaneum. 
 
 Labor and Employment.—According to the Division of Employment Security,
Missouri Department of Labor and Industrial Relations, the mineral industry
employed 8,333 workers in 1967, continuing the steady increase in employment
in that industry over the past several years. Employment in the metal mining
segment showed a substantial increase to 3,171 employees, compared with 2,314
in 1966. Employment in coal mining increased slightly to 676, but was far
below employment in that industry a few years ago—a reflection of increased
productivity. Employment in nonmetal mining increased to 
4,486. 
 
Table 5.—Employment and injury experience In the mineral industries

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Environment—The Missouri Air Conservation Commission issued a set
of regulations4 on air quality and pollution that became effective March
24, 1967. Regulation X- was of particular concern to the Missouri coal mining
industry because of its restriction on sulfur content of coal. Much of Missouri's
coal will not meet the required 2 percent sulfur limit. 
 Union Electric Co. announced plans to install a system for the removal of
sulfur dioxide from the stack emission of coalfired steam generators. The
system will 
be built at Union Electric's Meramec plant in south St. Louis County. According
to the company, tests indicate that the system will remove 83 percent of
the sulfur dioxide, almost all the sulfur trioxide, and 99 percent of the
fly ash from the flue gases. The removal of 83 percent of sulfur dioxide
is the equivalent of burning fuel with 0.5 percent sulfur content. 
 The Missouri Portland Cement Co. 
4 Missouri Air Conservation Commission. Air 
Quality Standards and Air Pollution Control 
Regulations for the St. Louis Metropolitan Area. 
1967.