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

57 
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 
Injury rates per million man-hours 
  
Fre- Severity quency 
1966: 
Coal                  
Metal                 
Nonmetal and native asphalt               
Sand and gravel         Stone                  
Total'               
1967: P 
Coal                  
Metal                 
Nonmetal and native asphalt               
Sand and gravel         Stone                   
Total'                
5,240 
1,127 
 
1,111 
479 
2,583 
210 
277 
 
275 
272 
289 
1,101 
312 
 
306 
130 
746 
8,769 
2,613 
 
2,535 
1,176 
6,194 
5 122 27 
1 361 161 63 
14.48 4,25610.33 295 
14.60 2,66814.45 12,02810.33 4,764 
 
10,540 
246 
2,595 
21,287 
8 264 
12.78 4,158 
 
5,025 
1,065 
 
770 
515 
2,550 
210 
293 
 
272 
270 
283 
1,057 
312 
 
210 
139 
723 
8,617 
2,585 
 
1,695 
1,259 
5,950 
4 118 34 
 24 223 55 
14.16 3,60713.15 608 
14.16 40417.47 1,9989.75 3,639 
 
9,920 
246 
2,440 
20,106 
7 253 
12.93 2,860 
"Preliminary. 
' Data may not add to total shown because of independent rounding. 
 
REVIEW BY MINERAL COMMODITIES 
 
MINERAL FUELS 
 
 
 Mineral fuels accounted for 52 percent of the total value of the State's
mineral production, compared with 49 percent in 
1966. 
 
 Asphalt (Native).—Alabama ranked third among the States in the production
of native asphalt. Alabama Asphaltic Limestone Co. mined bituminous limestone
at its Margerum quarry, Colbert County, for roadstone. 
 
 Coal (Bituminous) .—Bituminous coal production increased 9 percent
and was at its highest level in 19 years. The five leading producers supplied
49 percent of 
the State's total production. The average output per mine increased from
78,000 tons in 1966 to 99,000 tons. Captive tonnage constituted 46 percent
of the total production, and was the same as in 1966. Of the total production,
60 percent was from underground mines, 39 percent from strip mines, and 1
percent from auger mines. Rail and water transportation was used to ship
84 percent of the coal, and the remainder was shipped by truck. Ninety-seven
percent of the coal mined underground was mechanically loaded. 
 Of the coal produced 73 percent was cleaned at 26 cleaning plants. The average
coal recovery was 60 percent.