10-16-020 Ventilation.

   It shall be the duty of every person constructing any underground work within the corporate limits of the city to maintain, through any shaft, conduit, or underground work where men or animals are employed, currents of air sufficient for the health and safety of all the men and animals employed therein, and such ventilation shall be produced by fans or other artificial means.

   The quantity of air to be kept in circulation and passage at a given point shall be not less than 75 cubic feet per minute for each person, and not less than 300 cubic feet per minute for each animal, measured at the foot of the downcast; and this amount may be increased in the discretion of the inspector whenever in his judgment unusual conditions make a stronger current necessary.

(Prior code § 180-2)

10-16-030 Hoisting cages.

   Every hoistway connecting any such underground work with the surface of the ground shall be equipped with a substantial cage for carrying persons. Each cage shall be safely constructed, shall be covered with heavy steel plate covers to protect the persons riding thereon from falling objects, and shall be equipped with adequate safety devices.

   No more than one person shall be carried on each cage for each two square feet of floor surface.

(Prior code § 180-3)

10-16-040 Hoisting cables.

   The ends of the hoisting cables attached to the cages shall be well secured on the drums and to the cages, subject to the approval of the inspector in charge of such work.

(Prior code § 180-4)

10-16-050 Violation – Penalty.

   Any person violating any of the provisions of this chapter shall be fined not less than $10.00 nor more than $200.00 for every such offense.

(Prior code § 180-5)