THE MINERAL INDUSTRY OF OHIO 
631 
 
 Perlite (Expanded).—Crude perlite shipped from Western States was
processed and expanded at four plants, one each in Cuyahoga, Hamilton, Lorain,
and Ottawa Counties. The expanded perlite was used as plaster and concrete
aggregate, insulation, and for soil conditioning. The Cleveland Gypsum Co.,
Division of Cleveland Builders Supply Co., installed a perlite dust collection
system at its Cleveland plant. The fine perlite dust will be sold as a lightweight
filler material.2 
 
 Salt.—Production of salt increased for the ninth consecutive year
and established a new high of 5,407,000 tons as output rose 5 percent above
that of 1966. Value increased $3.8 million to $39.5 million. Rock and evaporated
salt production was 
greater but brine output declined. Salt recovered from underground mines
in Cuyahoga and Lake Counties was sold chiefly for highway ice control and
in chemical applications. Brine production from wells in Lake and Summit
Counties was mainly captive tonnage used for manufacturing chlorine and soda
ash. Evaporated salt produced in Cuyahoga, Meigs, Summit, and Wayne Counties
was marketed for a wide variety of uses including pressed blocks. Evaporated
salt producers used both the vacuum-pan and open-pan processes for recovering
the salt. Lake County, with two operations, continued to rank first in output.
Morton Salt Co. began to 
 
2 Rock Products. V. 70, No. 2, February 1967, 
p. 117. 
 
Table 7.—Sand and gravel sold or used by producers by classes of operations
and uses 
(Thousand short tons and thousand dollars) 
1966 
Class of operations and use 
Quantity Value 
 
1967 
 
 
 
Quantity 
Value 
Commercial operations: 
Sand: 
 
 
 
Building 7,044Paving 8,678Fill 1,881Molding 543Fire or furnace 173 
$7,799 
9,011 
1,234 
2,311 
523 
7,058 
8,149 
1,413 
475 
138 
$8,020 
8,732 
929 
2,093 
423 
 Dther' 962 
 Total 19,281 
 
Gravel: 
3,082 
1,081 
3,342 
 
23,960 
18,314 
23,539 
 
 
 
 
Building 7,024Paving 13,716Railroad Ballast 12 
8,223 
16,851 
9 
7,357 
12,959 
W 
8,882 
16,478 
W 
Fill 1,931 
1,095 
2,035 
1,182 
 Other'  1,773 
  Total 24,456  Total sand and gravel 43,737 
 
Government-and-contractor operations: 
2,721 
2,152 
2,662 
 
28,899 
24,503 
29,204 
 
52,859 
42,817 
52,743 
 
 
 
 
Sand: 
 
 
 
 Paving 7 Fill 8 
 Total 15 
 
Gravel: 
2 
2 
175 
  
62 
 
4 
175 
62 
 
 
 
 
 Paving 84 Fill 15 
 Total 99 Total sand and gravel 114 
 
All operations: 
 Sand 19,296 Gravel 24,555 
 Grand total 43,851 
38 
8 
127 
77 
46 
37 
 
46 
204 
83 
 
50 
379 
145 
 
23,964 
28,945 
18,489 
24,707 
23,601 
29,287 
 
52,909 
43,196 
52,888 
W Withheld to avoid disclosing individual company confidential data. ' Includes
the following sands: Glass, blast, engine, filtration, ground, and other.
' Includes miscellaneous and other gravel, and data indicated by symbol W.