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TRAVERSE CITY, Mich. (AP) - Michigan and eight other states sued the Bush administration Tuesday, saying the White House failed to adequately regulate emissions of mercury and other pollutants at cement plants.
The states contend a rule issued by the Environmental Protection Agency in December does not comply with the federal Clean Air Act.
Mercury comes from raw materials used to make cement — such as limestone, clay, sand and iron ore — and from fuels such as coal, which fires the kilns where the ingredients are baked at high temperatures.
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