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Manganese (Mn) is a hard, gray metal that is frequently used in the production of steel. Workers may be harmed from exposure to manganese through the breathing of manganese fumes or dusts. The level of exposure depends upon the dose, duration, and work being done. Continued exposure can damage the lungs, liver, and kidneys. Exposure to manganese dust or fumes can also lead to a neurological condition similar to Parkinson's disease.
Workers most at risk of being exposed to manganese often perform welding tasks. Welding occurs in the construction, manufacturing, transportation, mining, and agriculture industries and other occupations, such as pipe-fitters or millwrights. Somewhat smaller numbers of workers in the metallurgical and other manufacturing industries are also at risk.
On this page you will find resources containing methods of protecting workers from exposure and recommended exposure limits.
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