Sec. 87.134.  EFFECT OF SUBCHAPTER.  The provisions of this subchapter are cumulative of existing laws relating to the uses of gas and do not restrict or affect the manufacture of carbon black from processed sour gas as authorized by Section 86.182 of this code.
Acts 1977, 65th Leg., p. 2545, ch. 871, art. I, Sec. 1, eff. Sept. 1, 1977.