11.   Last month, the incinerator industry sued Massachusetts to overturn new limits on mercury emissions.

12.   Missouri does regulate mercury emissions directly into water.

13.   Other rules would curb pollution from cattle and pig feedlots and mercury emissions from power plants.

14.   Southern Co. is one of the major sources of mercury emissions.

15.   The Bush administration has not decided whether it will go ahead with regulations on mercury emissions from power plants, a spokesman for the Environmental Protection Agency said Wednesday.

16.   The Environmental Protection Agency announced last month that it will begin regulating mercury emissions from power plants.

17.   The EPA will release a report tomorrow that details sources of mercury emissions and the effect of mercury on human health.

18.   The harm from mercury emissions is still uncertain.

19.   The legislation calls for the EPA to explore ways of measuring mercury emissions.

20.   The steel companies fear that environmental regulators will force them to take costly antipollution measures because of mercury emissions traceable to recycled cars.