Any tunnel, shaft, conduit, slope, or other underground work in the process of sinking, or any opening or excavation for the purpose of constructing any such shaft, tunnel, conduit, slope or other underground work within the corporate limits of the city, shall be subject to supervision and inspection under the direction of the commissioner of transportation who may appoint such inspectors for the purpose as the city council may authorize; provided, that the provisions of this chapter shall not apply to any such work constructed or performed by the city; and provided further, that such provision shall not apply to open cut work.
Inspectors of underground work shall be appointed by the commissioner of transportation according to law, and shall be practical and expert miners, experienced in tunnel and sewer work. The inspectors shall be competent persons with at least four years' practical mining experience, and having a practical and technical knowledge of the properties of mining gases, the principles of ventilation, the care and proper adjustment of hoisting engines, and the management and efficiency of pumps, ropes, and winding apparatus. The inspection herein provided for shall be paid for by, and be at the cost of, the person constructing any such work.
(Prior code § 180-1; Amend Coun. J. 12-11-91, p. 10925)