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Manganese availability - market economy countries: 1980's perspective.
Denver, CO: U.S. Department of the Interior, Bureau of Mines, IC 9327, 1992 Jan; :1-25
There are 14 operations that supply 97 pct of the market economy country (MEC) manganese and contain nearly all of its resources. Six mines account for about 70 pct of the production and 85 pct of the resources; there are no known resources that are economically close to those that are currently being mined. Costs (January 1989 dollars) of producing manganese concentrates from the operations evaluated are estimated to range from $0.96 to $1.86 per long ton unit (LTU or 22.4 Lb) of contained manganese. Total MEC demonstrated resources evaluated amount to about 1.2 billion tons of in situ ore containing 474 million tons of manganese. Identified resources amount to about 1.8 billion tons of in situ material.
IH; Information Circular
Denver, CO: U.S. Department of the Interior, Bureau of Mines, IC 9327
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division