Nonmetal Operator Mining Facts - 2007 - Mining Operations; Nonmetal Operator Mining Facts - 2007
Description:In 2007, a total of 725 nonmetal mining operations reported employment to the Mine Safety and Health Administration (MSHA).1 Nonmetal mines com-prised 4.9% of all m ining operations. • Mines producing common clay comprised 25.4% (n=184) of all nonmetal mining operations. • Nonmetal mining operations were located in all states and territories except Alaska, Delaware, Hawaii, Maine, New Hampshire, Rhode Island, Puerto Rico, and the U.S. Virgin Islands.
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