StacksVerified U.S. regulatory reference

40 CFR §424.30

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The provisions of this subpart are applicable to discharges resulting from slag processing, wherein: (a) The residual metallic values in the furnace slag are recovered via concentration for return to the furnace, or (b) the slag is “shotted” for other further use.