Mo. Rev. Stat. § 293.140
Current with changes from the 2024 Legislative Session
Any new escapement shaft constructed or opened for operation after the effective date of this chapter, shall be equipped with a substantial hoist or stairway. Such stairway shall be constructed at an angle not greater than forty-five degrees, and shall be provided with handrails and platform or landing at each turn of stairway.
§ 293.140, RSMo