30 C.F.R. § 77.1912 – Ladders and stairways. | Midpage- (a) Substantial stairways or ladders shall be used during the construction of all shafts where no mechanical means are provided for men to travel.
- (b) Landings at intervals of not more than 30 feet shall be installed.
- (c) Shaft ladders shall project 3 feet above the collar of the shaft, and shall be placed at least 3 inches from the side of the shaft.