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

729 
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- Se- 
quency verity 
1966: 
Coal               
Metal              
Nonmetal           
Sand and gravel      
Stone               
Total'            
1967: a 
Coal               
Metal             
Nonmetal          
Sand and gravel     
Stone              
Total 1             
2,166 
1,687 
956 
708 
2,647 
178 
243 
267 
261 
278 
385 
410 
255 
185 
736 
3,087 
3,301 
2,124 
1,574 
6,002 
 6 115 2 98 
 37 
 33 
 2 150 
 39.20 12,919 30.30 6,623 17.42 1,661 20.97 460 25.33 3,014 
 
8,164 
241 
1,971 
16,087 
 10 433 
 27.54 5,227 
 
2,075 
1,670 
730 
600 
2,830 
178 
262 
244 
251 
259 
370 
439 
178 
151 
734 
3,033 
3,523 
1,464 
1,324 
6,023 
 4 112 3 107 
 36 
 1 18 
 102 
 38.25 9,168 31.23 7,062 24.60 535 14.35 4,961 16.93 2,749 
 
7,910 
237 
1,873 
15,367 
8 375 
24.92 4,985 
P Preliminary. 
Data may not add to totals shown because of independent rounding. 
 
REVIEW BY MINERAL COMMODITIES 
 
NONMETALS 
 
 Production of nonmetals accounted for 63 percent of the total value of mineral
production in the State, a 1-percent decrease from that of 1966. The principal
nonmetal commodities produced in order of value were stone, cement, phosphate
rock, and sand and gravel. 
 
 Barite.—Continuing a 3-year declining trend, production of barite
in Tennessee dropped considerably below that of 1966. Barite was mined by
three companies from five mines in the eastern part of the State. 
 
 Cement.—Tennessee ranked fifth in the Nation in the production of
masonry cement, accounting for 5 percent of the national total. Production
decreased slightly from that of 1966. Masonry cement was produced by four
companies operating six plants in six counties. Three plants are in eastern
Tennessee and three in central Tennessee. Of the masonry cement produced,
66 percent was shipped to Tennessee consumers. Other consumers, by State,
were Georgia (12 percent), North Carolina (8 percent), Kentucky (4 percent),
Alabama (3 percent), and South Carolina (3 percent). Indiana, Florida, and
West Virginia each received less than 1 percent of the total shipped. 
 Production of portland cement decreased 115,000 barrels, 2 percent less
than in 
1966. Fifty-one percent of the cement shipments were within Tennessee. Outof-State
shipments went to North Carolina (19 percent), Georgia (19 percent), Virginia
(4 percent), Kentucky (3 percent), and Alabama (3 percent). Other States
receiving shipments were South Carolina, West Virginia, Indiana, Mississippi,
and Florida. 
 Approximately 3 million tons of raw material was used in the manufacture
of portland cement. This material consisted of limestone (64 percent), cement
rock (24 percent), -clay and shale (7 percent), gypsum (3 percent), sand
(1 percent), and slag and iron-rich residues (1 percent). 
 During 1967, portland cement produced in Tennessee was used as follows:
In ready-mix concrete (63 percent), in concrete products (20 percent), by
building materials dealers (7 percent), by highway contractors (6 percent),
and miscellaneous (4 percent). 
 
 Clays.—Tennessee again led in the production of ball clay, accounting
for 67 percent of the Nation's total. Nine mines were operated by five companies
in Henry and Weakley Counties. H. C. Spinks Clay Co. was the leading producer.
Production was 3 percent less than in 1966. 
 The State ranked fourth in the production of fuller's earth with 4 percent