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. "Materials in Industry." Materials and Man's Needs: Materials Science and Engineering -- Volume III, The Institutional Framework for Materials Science and Engineering. Washington, DC: The National Academies Press, 1975.
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TABLE 7.1 Annual Requirements for Principal Primary Materials Used in the United States (Pounds per capita, 1972)
A. Nonmetallic Inorganic Materials:
Sand and gravel
Iron and steel
C. Natural Organic Materials:
Natural fibers and oils
D. Synthetic Organic Materials:
(Equivalent total for entire U.S. population = 2.57 billion short tons.)