30 CFR § 57.19093
Standard signal code
May 28, 2026
§ 57.19093 Standard signal code.
A standard code of hoisting signals shall be adopted and used at each mine. The movement of a shaft conveyance on a “one bell” signal is prohibited.
A standard code of hoisting signals shall be adopted and used at each mine. The movement of a shaft conveyance on a “one bell” signal is prohibited.