THE MINERAL INDUSTRY OF MISSOURI 
473 
 
area, installation of a new rotary kiln for calcining clay, and a shuttle
kiln for producing specialized refractory products. Scheduled for completion
by the end of 1968, the new facilities were expected to increase capacity
for making fire brick and specialties products and will improve raw materials
handling. 
 At midyear, Missouri Clay Products Co., a subsidiary of St. Joseph Lead
Co., began grading and filling for a 1,000-foot railroad spur into its Stoddard
County clay deposit. Planned construction included a grinding and drying
plant, storage and loading facilities, a laboratory, and an office. The montmorillonite-rich
bentonitic clay will be used principally as a binder for iron ore pellets.

 Carter-Waters Corp. of Kansas City, the only producer of expanded lightweight
shale aggregate in the State, was increasing the capacity of its New Market
plant in northern Platte County by installing a new 11- by 175-foot rotary
kiln designed to produce 600 cubic yards per day. The project was scheduled
for completion in mid-1968. 
 In October, Hydraulic Press Brick Co. announced plans to abandon its brick
plant in St. Louis. The 13-acre site was to be sold as an industrial tract
The company's warehouse in St. Louis will be a distribution point for brick
production from company-owned plants in Illinois. 
 The Federal Bureau of Mines and the Missouri Division of Geological Survey
and Water Resources initiated a cooperative clay-testing program. Recognizing
that the greaterpart of St. Louis County, underlain by shale and clay suitable
for manufacturing brick, is in an area that was essentially withdrawn from
industrial exploitation by zoning laws and urban sprawl, fieldwork started
in an area of Lincoln County, con- 
sidered to be an accessible source of potential but untested raw materiak.

 
 Lime.—Missouri lime plants were adding new facilities and equipment.
Ash Grove Lime & Portland Cement Co., Springfield, was installing a 200-ton-per-day
calcimatiq rotating hearth kiln. Mississippi Lime Co., Ste. Genevieve, was
adding two preheatertype rotary kilns, each with a capacity of 500 tons per
day. Valley Dolomite Corp., Bonne Terre, began production of dolomitic quicklime
at midyear; previously, the company produced only dead-burned dolomite. 
 
 
Table 9.—Lime sold or used by producers 
(Thousand short tons and thousand doLars) 
 
Year 
Quantity 
Value 
1963                    
1964                    
1965                    
1966                    
1967                    
1,240 
1,219 
1,442 
1,494 
1,434 
$14,386 
14,328 
16,782 
17,910 
16,371 
 Sand and Gravel.—Tonnage declined for the second consecutive year,
falling about 9 percent below 1966 production and nearly 20 percent below
the 1965 all-time high. The major drop was in tonnage of construction sand
and gravel, reflecting the decline in residential and commercial construction.
Industrial sand output approximated output in 1966~ Production of alluvial
sand and gravel was reported at 70 operations from 41 counties. Silica sand
was produced in three counties at five operations. Major sources of construction
sand were the Mississippi, Missouri, and Meramec Rivers. All silica sand
production was from the St. Peter Sandstone. The Meramec River was the largest
single source of gravel in the State. 
 
Table 10.—Sand and gravel sold or used by producers 
(Thousand short tons and thousand dollars) 
 
Year 
Comm 
Quantity 
erical 
~ 
 
Value 
 Governmentand-contractor 
 
Quantity Value 
Quantity 
TothI 
 
 
 Value 
1963                            
9,808 
$11,580 
 845 $680 
10,653 
$12,260 
1964                            
10,761 
12,762 
 722 618 
11,483 
13 380 
1965                            
1966                            
1967                            
11,229 
10,454 
9,651 
12,954 
13,283 
12,488 
 839 781 248 257 65 68 
12,068 
10,702 
9,716 
13735 
13,540 
12,556