| supervisor of an underground mine must have a minimum of 2 years of work experience at a coal mine surface facility or coal preparation plant. In addition to the work experience requirement set forth in this Section, a contractor engaged in the construction, demolition, or dismantling of surface structures must successfully complete an examination concerning the Department's health and safety regulations as these regulations pertain to the contractor's responsibilities, which shall be administered by the Mining Board. Temporary certification may be issued by the Mining Board for persons with at least 2 years of the required work experience and shall be valid until the time of the next examination or for a maximum of 6 months, whichever is shorter. | |