Table 
4.—Employment 
 
and injury 
experience 
in the mineral industries 
 
Year and industry 
Average 
men 
working 
daily 
Days 
Active 
Man-days 
worked 
(thousands) 
Man-hours 
worked 
(thousands) 
Number of 
injuries 
Fatal Nonfatal 
 Injury rates per million man-hours 
 
Frequency Severity 
1966: 
 
Coal            
 
Metal           
 
Nonmetal        
 
 Sand and graveL.~. 
 
Stone           
 
 Total        1967 
 
Coal            
 
Metal           
 
Nonmetal        
 
Sand and graveL.. 
 
Stone           
 
 Total 1        
24,225 
41 
435 
 384 
2,001 
187 
308 
227 
273 
234 
4,519 
13 
99 
105 
469 
36,001 
101 
788 
993 
3,841 
 42 1,588  12 1 36  24 4 103 
 45.28 9,576 
 118.68 7,922 
 46.97 9,001 24.17 351 27.86 7,208 
 
27,086 
192 
5,205 
41,724 
 47 1,763 
 43.38 9,124 
 
24,000 
40 
365 
420 
2,050 
196 
282 
237 
245 
247 
4,698 
11 
86 
103 
507 
36,800 
90 
688 
1,001 
4,205 
 51 1,620  15  37 - - -- 23 3 112 
 45.41 10,868 
 166.25 2,383 
 53.77 1,543 22.99 817 27.35 5,296 
 
26,875 
201 
5,406 
42,784 
 54 1,807 
 43.50 9,918 
P Preliminary 
 
 
1 Data may not add to totals shown because of independent rounding. 
 
 
REVIEW BY MINERAL COMMODITIES 
THE MINERAL INDUSTRY OF KENTUCKY 
351 
 
unit at its Big Sandy Plant at Louisa. Company officials estimated this unit
would use over 2 million tons of coal annually. 
Tennessee Valley Authority is constructing a 1,150,000-kilowatt steam-elecMINERAL
FUELS 
 
 The value of bituminous coal, natural gas, and crude petroleum production
was $463 million, 86 percent of the total mineral production value of the
State. 
 
 Coal (Bituminous) .—Output of coal increased 8 percent above that
of 1966, the record year, and surpassed the million ton mark for the first
time. The value of production was $397 million, 11 percent below that of
1948, the record year. 
 Bituminous coal was produced at 1,532 mines in 37 counties, compared with
1,704 mines in 37 counties in 1966. Leading producing counties on basis of
tonnage mined were Muhlenberg, Pike, Hopkins, Ohio, and Letcher. 
 In the Eastern Kentucky coalfield, 1,454 mines in 27 counties produced 54
million tons, compared with 1,623 mines in 27 counties and a production of
51 million tons in 1966. Average production per mine increased from 31,400
tons to 37,100 tons. Underground mines produced 
79 percent of the total, auger mines 11 percent, and strip mines 10 percent.
Shipments were 95 percent by rail or water, and 5 percent by truck. Captive

tric generating unit at the Paradise plant in Muhlenberg County. 
Kentucky Utilities Co. plans a 420,- 
000-kilowatt steam-electric unit at the E. 
W. Brown plant on Herrington Lake near 
Harrodsburg. 
tonnage was 11 percent of the total. 
 Equipment used at 1,248 underground mines included 938 cutting machines,
which cut 71 percent of the coal mined underground; 1,422 power drills, which
drilled 78 percent of the tonnage; 533 mobile loading machines, loading 59
percent of the tonnage; 90 continuous mining machines, with six mobile loaders
used in conjunction, mined 21 percent of the tonnage. Othes equipment included
528 locomotives, 662 shuttle cars, 512 shuttle buggies, and 190 gathering
conveyors. 
 At the 66 strip mines, equipment used included 103 power shovels, 86 bulldozers,
48 power drills, and 172 trucks. Equipment used at 140 auger mines included
142 coal recovery augers, five power shovels, 103 bulldozers, nine power
drills, and 83 trucks. 
 Of the total coal production from the Eastern Kentucky field, 22 percent
was crushed, 37 percent was cleaned at 34 preparation plants, and 11 percent
was treated with oil or other materials. 
 In the Western Kentucky coalfield, 78 mines in 10 counties produced 46 million
tons of coal, compared with 81 mines in 10 counties and 42 million tons in
1966.