15A NCAC 02D .0527 EMISSIONS FROM SPODUMENE ORE ROASTING Emission of sulfur dioxide and sulfuric acid mist from any one kiln used for the roasting of spodumene ore shall not exceed: (1) (2) History Note: 9.7 pounds of sulfur dioxide per ton of ore roasted. 1.0 pound of sulfuric acid mist, expressed as H(2) SO(4), per ton or ore roasted. Authority G.S. 143-215.3(a)(1); 143-215.107(a)(5); Eff. March 15, 1978; Amended Eff. January 1, 1985.