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- W123463731 abstract "The report has been prepared under a Memorandum of Understanding between the U.S. Bureau of Mines, U.S. Department of the Interior, and the Maine Geological Survey for collecting information on all nonfuel minerals. The value of Maine's nonfuel mineral production in 1991 was $41.3 million, a $21.2 million decrease compared with that of 1990. Decreases in output and value were reported for most of the nonfuel minerals produced. The largest decreases in both production and value were for construction sand and gravel and dimension stone. Smaller decreases were estimated for both masonry and portland cement. Other mineral commodities produced in the State included common clay, gemstones, and peat. Perlite was shipped in from out-of-State and expanded at one plant in the State." @default.
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- W123463731 date "1993-07-01" @default.
- W123463731 modified "2023-09-26" @default.
- W123463731 title "Minerals yearbook, 1991: Maine. Annual report" @default.
- W123463731 hasPublicationYear "1993" @default.
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