Ohio Revised Code Title XV. Conservation of Natural Resources § 1567.50

The operator of a mine operated by a shaft shall provide and maintain a metal tube, suitable for conversation between persons, connecting the engine room with the top and bottom of such shaft. The cages operated in said shaft shall have an approved safety catch, a sufficient cover, and rings or other adequate handholds for the accommodation of the number of persons permitted on the cage. Such cages shall be protected on each side by a boiler plate not less than one-fourth inch in thickness and not less than three feet high, and a gate or other secure device, approved by the deputy mine inspector, not less than forty-two inches high shall be fastened across the open ends of such cage when men are being regularly lowered and hoisted. There shall be provided an approved safety gate at the top of each shaft, an adequate brake to control the drum used for lowering or hoisting persons in shafts or slopes, and an indicator on all machines used for such purposes to show the location of cages in the shaft or slope. No cage having an unstable or self-dumping platform shall be used for the carriage of persons unless such platform is securely locked.

No operator of a mine shall refuse or neglect to comply with this section.