US lawMontanaRegulationsTitle 17 — ENVIRONMENTAL QUALITYChapter 17.8 — AIR QUALITYSubchapter 17.8.3 — Emission Standards17.8.323ARM 17.8.323ARM 17.8.323. SULFUR OXIDE EMISSIONS--PRIMARY COPPER SMELTERSRepealedLast amended: 2001Length: 1 wordsOfficial source Cite as Mont. Admin. R. 17.8.323(REPEALED)PreviousARM 17.8.322NextARM 17.8.324