THE MINERAL INDUSTRY OF SOUTH DAKOTA 719 1 Includes quartz and quartzite.2
Excludes dimension stone, included with "Other stone." 
 
to a paper presented by Bruce H* Lien, this vertical kiln, designed by Development
Engineering, Inc., and built by a local steel fabricator, has an even greater
output potential than that attained this year. Lime manufactured by Pete
Lien & Sons was used mainly as construction lime. Black Hills Lime Co.,
near Pringle, produced only chemical lime. 
 Lithium.—South Dakota was one of four States reporting production
of lithium iiiinerals. Keystone Chemical Co., near Keystone, shipped a small
amount of handsorted lepidolite ore. 
 Mica.—The only scrap mica produced in South Dakota came from the Peerless
mine operated by Northwest Beryllium Corp. It was one of six minerals recovered
from pegmatite ore at the corporation's flotation mill at Keystone. 
 Sand and Gravel.—Production of sand and gravel was reported in all
but Bennett and Miner Counties. The total quantity of 13.5 million tons,
valued at $13.7 million, remained essentially the same as that for 1966.
The major use was for highway construction, improvement, and maintenance.

 Government-and-contractor sand anJ gravel was produced for the U.S. Army
Corps of Engineers, Federal Bureau of Indian Affairs, U.S. Bureau of Public
Roads, U.S. Forest. Service, Iowa State Highway Commission, South Dakota
Cement Commission, South Dakota Departmnent of Highways, and county and municipal
highway departments. This output was reported by 62 respondents from 256
operations. Commercial sand and gravel production was reported by 87 respondents
from 136 operations. 
 Stone.—Stone sold or used in South Dakota was classified as crushed
and broken granite, limestone, sandstone, and miscellaneous stone; and dimension
granite, limestone, and sandstone. Compared with 1966 shipments, an increase
of $1.7 million in total value was noted in 1967 along with a decrease of
320,000 tons in total tonnage. This condition occurred because of an increase
in the price of monumental stone and in the quantity of architectural stone,
whereas the shipments of crushed and broken limestone and sandstone decreased.
The value of the increase in dimension stone shipped more than offset the
value of the decrease in crushed and broken limestone and sandstone, because
of the greater value per unit of dimension stone. Again the leading counties
were Grant and Pennington, with production values of $6.1 million and $1.6
million, respectively. Output in Grant County was ' Mahogany Granite" dimension
stone from six quarries; that from Pennington County included crushed granite;
crushed, broken, and dimension limestone; crushed quartz; and dimension sandstone.
As the result of the installation of an atomic absorption tester, Northwest
Beryllium Corp. was able to increase the quality and output of crushed quartz,
a high-grade optical silica sold under the trade name Kesil. 
 In August, Texas Mining Co. purchased South Dakota Sand Co. at Pningle,
Custer County. Soon after this transaction, construction was begun to double
the size of the plant. Manufactured industrial-silica sand was produced by
South Dakota Sand Co. 
 
TabI 
e 7.—Stone sold or used by producers, by kinds 
Year 
Granite Limestone Sandstone 1 
 
———                       —             Short tons
Value Short tons Value Short tons Value 
1963                   
 24,630 $2,761,546 1,652,571 $2,427,016 1,033,749 $2,070,837 
1964                   
 17,803 2,807,851 1,179,551 1,734,812 920,361 1,702,349 
1965                   
1966                   
 20,129 2,944,586 868,726 1,411,917 650,847 1,006,609 23,806 4,066,853 1,100,a75
1,793,263 983,897 1,997,291 
1967                   
1963                   
1964                   
1965                  
1966                   
1967                  
 48,024 6,160,368 2882,273 ' 1,398,984 2780,710 21,622,592 
 
Other stone Total 
 
Short tons Value Short tons Value 
 
 82,618 $79,310 2,793,568 $7,338,709   2,117,715 6,245,012 14,068 24,117
1,553,770 5,387,229 77,800 137,349 2,186,078 7,994,756 155,447 511,664 1,866,454
9,693,608