Section 2-26-8 - Methods of extraction(a) The department shall adopt rules regarding permissible methods of extraction.(b) No butane method of extraction shall be permitted by the department.Added by 2016 Pub. Laws, ch. 442,§ 1, eff. 1/1/2017.Added by 2016 Pub. Laws, ch. 441,§ 1, eff. 1/1/2017.