Mont. Admin. r. 17.8.323Download PDFCurrent through Register Vol. 20, October 18, 2024Rule 17.8.323 - SULFUR OXIDE EMISSIONS-PRIMARY COPPER SMELTERS (REPEALED)Mont. Admin. r. 17.8.323Eff. 12/31/72; AMD, 1981 MAR p. 203, Eff. 3/13/81; TRANS, from DHES, 1996 MAR p. 2285; REP, 2001 MAR p. 560, Eff 4/6/01.75-2-111, 75-2-203, MCA; IMP, 75-2-203, MCA;