PART 424—FERROALLOY MANUFACTURING POINT SOURCE CATEGORY
- Subpart A—Open Electric Furnaces With Wet Air Pollution Control Devices Subcategory (§§ 424.10 - 424.17)
- Subpart B—Covered Electric Furnaces and Other Smelting Operations With Wet Air Pollution Control Devices Subcategory (§§ 424.20 - 424.27)
- Subpart C—Slag Processing Subcategory (§§ 424.30 - 424.37)
- Subpart D—Covered Calcium Carbide Furnaces With Wet Air Pollution Control Devices Subcategory (§§ 424.40 - 424.47)
- Subpart E—Other Calcium Carbide Furnaces Subcategory (§§ 424.50 - 424.57)
- Subpart F—Electrolytic Manganese Products Subcategory (§§ 424.60 - 424.67)
- Subpart G—Electrolytic Chromium Subcategory (§§ 424.70 - 424.77)