Bureau of Mines / Minerals yearbook: Metals, minerals, and fuels 1972
Year 1972, Volume 1 (1972)
Meisinger, Arthur C.
Pumice and volcanic cinder, pp. 1069-1073 ff. PDF (398.7 KB)
1069Pumice and Volcanic Cinder By Arthur C. Meisinger' The quantity of pumice, pumicite, and volcanic cinder sold or used by producers and the quantity of pumice imported for consumption to meet the increased demand for pumiceous materials in construction— related uses set record highs in 1972. Do- mestic production was 3.8 million tons valued at $6.5 million from 220 operations in 16 States. Pumice imports in 1972 totaled nearly 600,000 tons valued at a record $1.5 million. DOMESTIC PRODUCTION Domestic production of pumiceous materials in 1972 was 12% higher in quantity and 25% higher in value than in 1971. The quantity produced in 1972 was 3.8 million tons, a record total. The previous high was * established in 1969 when production of pumice, pumicite, and volcanic cinder amounted to 3.6 million tons. The value of 1972 output was $6.54 million, which was the highest since 1966. Volcanic cinder, ash, and scoria comprised 79% of the U.S. output of pumiceous materials and was valued at a record $4.66 million. Domestic output in 1972 came from 101 firms, individuals, and governmental agencies producing from 220 operations in 16 States. The* principal producing States, in order of output, were Oregon, Arizona, and California, and their combined output accounted for two-thirds of the national total. Other States with significant output were Hawaii, Nevada, and New Mexico. Of the six leading States, only Arizona and Oregon showed a decrease in production from that of 1971. California led all producing States with 95 active operations, followed by Arizona with 34, and Hawaii with 22. Volcanic cinder was produced in 13 of the 16 States and in American Samoa from a mine operated by the Samoan Government. 1 Industry economist, Division of Nonmetallic Minerals. Table 1.—Pumice, pumicite, and volcanic cinder sold or used by producers in the United States 1 (Thousand short tons and thousand dollars) Year Pumice and Quantity pusnicite Value Volcanic Quantity cinder Value Total — Quantity - Value 1968 1969 1970 1971 1972 481 598 490 540 790 1,360 1,349 1,233 1,396 1,878 3,049 3,011 2,546 ' 2,851 3,023 4,210 3,701 3,438 ' 3,813 4,661 3,530 3,609 3,036 ' 3,391 3,813 5,570 5,050 4,671 ' 5,214 6,539 ' Revised. ' Values f.o.b mine, (1968—71); value f.o.b. mine or mill, 197L
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