W Withheld to avoid disclosing individual company confidential data; included
with "Other counties."' Includes Breckinridge, Daviess, and Floyd Counties,
and counties indicated by symbol W.THE MINERAL INDUSTRY OF KENTUCKY 
355 
 
2.7 million barrels. Lee County led eastern Kentucky counties with 1.8 million
barrels. 
 The Kentucky Geological Survey reported a total of 1,685 wells completed
in 1967, including injection wells for gas storage, water injection wells
for secondary oil recovery, and wells for water supply, and salt water disposal.

 The most significant oil discovery during the year was Inland Gas Co.'s
well in Boyd County. Initial production was 32 barrels of oil per day from
a sandstone formation of Cambrian age at a depts of 7,598 feet. This well
was producing from a record depth for Kentucky. 
 Basement test wells were drilled during the year in Clark and Menifee Counties;
both were dry holes. 
 
NONMETALS 
 
 Production of nomnetals accounted for 11 percent of the total value of mineral
production in the State. 
 
 Cement.—Kosmos Portland Cement Co. operated the Kosmosdale plant throughout
the year. Shipments of portland cement increased 20 percent above those of
1966, and were 6 percent below the 1965 record. Masonry cement shipments
decreased 1 percent and were 6 percent below the 1965 record. Raw materials
used in portland cement included limestone (75 percent), mis- 
cellaneous clay (21 percent), gypsum (3 percent), and iron ore (less than
1 percent). 
 
 Clays.—Kentucky ranked second in the United States in ball clay production.
Kentucky-Tennessee Clay Co. and Old Hickory Clay Co. mined clay at three
mines in Graves County. 
 Total fire clay production was 144,000 tons valued at $900,000, or 19 percent
less tonnage than in 1966. Nine companies mined fire clay at 19 mines in
four counties for firebrick, mortar, and other uses. Leading producers were
General Refractories Co., Harbison-Walker Refractories Co., and North American
Refractories Co. 
 Miscellaneous clay was mined by 13 companies at 15 mines in nine counties
for heavy clay products, lightweight aggregate, and cement. Leading producers
were Ohio River Sand Co., Inc., Kosmos Portland Cement Co., and Harsco Corp.
Production increased 8 percent over that of 1966, the previous record year,
and totaled 1.1 million tons valued at $1.1 million. 
 
 Fluorspar.—Fhiorspar was mined in Livingston and Crittenden Counties
for use in manufacturing hydrofluoric acid, glass, ceramics, steel, ferroalloys,
and in iron foundries. Shipments were 33,000 tons 
 
Table 8.—Sand and gravel sold or used by producers, by counties 
(Thousand short tons and thousand dollars) 
County 
 
~ 
 
1966 
 
 
1967 
 
 
 
Quantity 
Value I~un~ber 
 
Quantity 
Value 
Ballard  1Boone  4Calloway  3Carlisle  1 
 
32 
2,027 
W 
27 
$19 
1,922 
W 
16 
1 
4 
2 
1 
35 
1,819 
138 
29 
$20 
1,707 
120 
16 
Fulton 2 
 
W 
W 
1 
31 
16 
Gallatin                           
1 
299 
W 
1 
W 
W 
Graves                             
1 
57 
29 
1 
63 
32 
Henderson - 
1 
550 
W 
2 
W 
W 
Hickman 1 
 
29 
14 
1 
32 
16 
Jefferson  4Livingston  1Lyon  1Marshall  1 
 
2,161 
28 
21 
77 
1,848 
14 
11 
38 
4 
1 
1 
1 
2,191 
30 
24 
85 
2,361 
15 
12 
42 
Martin - 
1 
20 
20 
1 
19 
19 
Mason - 
1 
81 
116 
2 
W 
W 
McCracken -Trimble - 
1 
1 
319 
895 
W 
W 
2 
1 
W W 
W W 
Union - 3 
 
349 
377 
2 
W 
W 
Other counties' 4 
 Total 33 
 
1,092 
3,100 
4 
3,485 
3,483 
 
 
8,064 
 7,524 33 
 
7,981 
7,859