27-356. Protection from falling materials
A. Persons engaged in sinking a shaft in which regular hoisting from an upper level is going on, shall be protected from the danger of falling material by a suitable covering, with a sufficient opening left in the covering for the passage of the bucket or conveyance used in the sinking operation.
B. In shafts, winzes or raises where two or more crews are working, one crew above another, there shall be a bulkhead or other barrier between each two crews strong enough to stop tools or other material that may fall from the persons working above, and only the cage, skip or bucket compartment shall be left open.
C. Shafts or winzes shall have a bulkhead over the persons working in the bottom of the shaft or winze built of timber not less than six inches in thickness, not more than fifty feet above the bottom of the shaft or winze, to provide ample protection for the persons working in the bottom of the shaft or winze, and so constructed as not to shut off the air circulation. The cage, skip or bucket compartment only shall be left open. Shafts or winzes shall be cleaned down below the bulkhead after each blasting.
D. Windlasses and winzes shall be provided with a suitable plug or some other reliable device to prevent the bucket or other conveyance running back.
E. No open hook shall be used with a bucket in hoisting, but only some approved form of safety hook or shackle hook.
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