Section 30-3-206 - Use of internal combustion engines prohibited; exception(a) The use of equipment underground powered by internal combustion engines is prohibited except for those engines conforming to standards accepted by the MSHA for underground internal combustion engines. Equipment with engines conforming with rules adopted by the MSHA shall only be used and operated as authorized by rule of the inspector. (b) Repealed by Laws 1995, ch. 31, § 2. (c) Repealed by Laws 1995, ch. 31, § 2.