27-347. Construction of ladder-ways
A. Permanent ladder-ways shall be strong and firmly fastened, and shall be kept in
good repair.
B. In a vertical shaft the inspector may, in his discretion, by an order in
writing, direct that the ladder be inclined at the most convenient angle which the space
where the ladder is fixed allows, and every ladder shall have substantial platforms at
intervals of not more than twenty feet. The platform shall be closely covered, with
exception of an opening large enough to permit the passage of a human, and shall be
arranged so that a person cannot fall from one ladder through the opening to the next
ladder.
C. Ladder-ways shall be provided in shafts in the course of sinking them to within
a distance from the bottom as will secure them from damage by blasting. From the end of
the ladder-ways, portable ladders shall be extended to the bottom of the shaft.
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