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)
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.
http://rightsstatements.org/vocab/NoC-US/1.0/| As a work of the United States government, this material is in the public domain.| For information on re-use see: http://digital.library.wisc.edu/1711.dl/Copyright