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Bureau of Mines / Minerals yearbook: Area reports: domestic 1978-79
Year 1978-79, Volume 2 (1978-1979)

Arndt, Robert H.
Missouri,   pp. 299-314 PDF (1.9 MB)


Page 310

310 
MINERALS YEARBOOK, 1978-79 
horticultural aggregate, fillers, and other uses. Preparation of construction
aggregate was the largest single use. 
 Phosphate Rock.—With the abandonment of mining by Meramec Mining
Co.
at Pea Ridge, production of apatite concentrates, along with that of iron
ore pellets, ceased. 
 Sand and Gravel.—.Sand and gravel output experienced a sequence
of
fluctuations from 1975 to 1979. The largest output, achieved in 1978, was
followed in 1979 by the second lowest output of the 5-year period. Production
in 1978 was almost 60% higher than production in 1975. Value of output also
culminated in 1978 and declined in 1979, but less sharply than the production.
Average unit value of all sand and gravel produced rose from about $1.85
per ton in 1975 to $2.49 per ton in 1979. A drop of 33.3% in the value of
State road contract awards in 1978 from the value in 1977 foreshadowed a
decrease of about 20% in the output of construction sand and gravel in 1979.
Output of industrial sand diminished by less than 1% over the same interval.
About 94% of the sand and gravel produced in Missouri during the biennium
was used in construction. The remainder was industrial sand. The reduction
of output of construction materials was reflected in other statistics. Sand
and gravel mining occurred in 61 counties in 1978 and 56 in 1979. The number
of companies operating decreased from 130 to 96, and the number of deposits
utilized decreased from 136 in 1978 to 101 in 1979. Three firms operating
in four mines produced industrial sand in both years. Callaway, Clay, Jefferson,
Lewis, St. Louis, and Stoddard Counties, each ofwhich had sand and gravel
production exceeding 500,000 tons in 1978, led all others, and accounted
for 54.1% of the State's total output. In 1979, operations in Clay, Franklin,
Jefferson, and St. Louis Counties provided more than 500,000 tons per year
and collectively provided 53.7% of the State output. One hundred and seventeen
individual deposits, yielding as much as 300,000 tons each, provided about
67% of the State's output in 1978. Ninety-one deposits in the same size category
provided about 55% of the State's output in 1979. The remaining sand and
gravel in 1978 was produced from nine deposits, one of which exceeded 1 million
tons in annual output. In 1979, 10 
deposits provided the remaining output, with one exceeding 1 million tons
in annual production. Eighty-three deposits having individual production
of less than 100,000 tons provided almost 16% of the output in 1978, while
66 deposits in the same size category provided 19% of the output in 
1979. 
 More than 70% of the sand and gravel produced in 1978 was obtained in counties
adjacent to the Missouri and Mississippi Rivers because those counties have
relatively abundant stream, flood plain, and terrace deposits of sand and
gravel and relatively large concentrations of population. Eight of Missouri's
10 major cities are in counties adjacent to the rivers and provide demands
for housing, municipal, industrial, and commercial construction utilizing
large quantities of sand and gravel. Construction sand and gravel were used
in many ways. In 1979, about 71% of the sand and gravel was used in aggregates,
almost 14% was used for roadbase, about 10% comprised fill, and 4% for manufacture
of concrete products. Other identifiable uses were for plaster and gunite
sands, and as an antiskid material on icy highways. Industrial sand was dedicated
to various uses in the following manner: glass products, almost 53%; foundry
sand, 23%; manufacture of fiberglass, about 7%; and other minor uses such
as manufacture of refractories, silicon carbide, scouring cleansers, pottery,
porcelain and tile, and as a flux in smelting metals, as abrasive in sand
blasting, as a propping material in hydraulic fracturing, and in roofing
granules and fillers. Uses for construction and industrial sand and gravel
in 1979 were essentially similar. Trucks hauled about 74% of the sand and
gravel shipped in 1978. About 4% was shipped by railroad, and 1% went by
other means. Almost 21% was used where it was recovered. Shipments in 1979
involved a percentage decrease in the amount of material carried by truck
and an increase in the amount of sand and gravel carried by railway, waterway,
and other means of transportation. 
 Holliday Sand and Gravel Co. operated its first full season with a newly
installed barge-mounted plant and dredge at its Randolph site in 1978. The
dredge and plant can recover 700 tons per hour of lignite-free sand and gravel
for transportation to the shore installations. 


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