645 776 720 754 
 672 
1,596 
3 
64 
1 
37 
1,967 
 11 
10 
1,964 
11 
5 
 135 
8,818 
 100 
8,343 
8,630 
 
2 10,616 
 1 Glass sand combined with "Other (construction)" sand to avoid disclosing
individual company confidential data. 
 2 Data do not add to total shown because of independent rounding. 
THE MINERAL INDUSTRY OF SOUTH DAKOTA 
 
 
REVIEW BY MINERAL COMMODITIES 
717 
 
NONMETALS 
 
 Cement.—The South Dakota Cement Commission produced at its Rapid City
plant (the only State-owned cement plant in the United States, and the only
cement plant in South Dakota), 45,000 barrels of masonry cement and 1.4 million
barrels of portland cement. Production of masonry cement was 31 percent above
that of last year; output of portland cement decreased 30 percent. To manufacture
this amount of cement, approximately 352,500 tons of limestone, 98,200 tons
of shale, 11,900 tons 
of gypsum, 8,500 tons of sand, and 3,750 tons of iron ore were required.
With the exception of the iron ore, obtained from a stockpile, all of these
nonmetallics were quarried in Pennington County during the year. 
 The decrease in the production of portland cement was caused by the cutback
in the use of cement in highway construction. In 1966 highway contractors
purchased 819,300 barrels; in 1967, however, they accounted for only 244,200
barrels. Sales to other users were essentially unchanged. 
 
Table 5..—Sand and gravel sold or used by producers, by classes of
operations and uses 
(Thousand short tons and thousand dollars) 
 
Class of operation and use 
 1966 1967 
Quantity Value Quantity Value 
 
Commercial operations: 
Sand: 
Construction: 
Building 
Paving 
Fill 
Other 
Industrial: Glass 
 
Total 
 
Gravel: 
Construction: 
Building 
Paving 
Railroad ballast 
Fill 
Other 
Miscellaneous 
 
Total 
 
Total sand and gravel 
 
Government—and contractor operations: 
Sand: 
Paving 
Fill 
Other 
 
Total 
 
Gravel: 
Building 
Paving 
Fill 
Other 
 Total - 
 Total sand and gravel - 
 
All operations: 
Sand 
Gravel 
 
Total 
 
404 
165 
$493 
206 
621 
56 
$677 
 56 
73 
65 
43 
21 
13 
112 
 
 
(1) 
(1) 
 
 
 214 317 472 
 1,459 1,700 1,384 
 12 9 4 
 44 35 78 
 30 20 1 
 18 18 31 
 1,777 2,099 1,970 2,373 
 2,422 2,875 2,690 3,127 
 2,246 2,258 
 9 9 
 2,255 2,267 1,988 1,980 
 8,774 8,620 
 10 9 
 1 1 
 8,953 8,443 8,785 
 11,208 10,710 10,773 
 2,900 3,043 2,708 2,734 
 10,730 10,542 10,755 11,003 
 13,630 13,585 13,463 13,737