Manganese
Compounds Emissions
1999
39%
Other categories (456 categories)
8%
Utility Boilers: Coal
7%
Integrated Iron & Steel Manufacturing
21%
Industrial/Commercial/ Institutional Boilers & Process Heaters
10%
Portland Cement Manufacturing
5%
Miscellaneous Metal Parts & Products (Surface Coating)
6% Metal
Coil (Surface Coating)
4% Iron
Foundries