Ariz. Admin. Code § 11-1-1131

Current through Register Vol. 31, No. 1, January 3, 2025

Section R11-1-1131 - Mine Hoist Drives

All mine hoists shall consist of one of the following drives:

1. V-belt driven and not less than four V-belts with a designed safety factor of 10.

2. Gear driven. Fiber gears shall not be used.

3. Friction driven.

4. Direct drive.

There shall be no chain-driven hoists used for underground operations. All hoists other than automatic hoists must have hand-operated brakes and the brakes must be on the drum.

Ariz. Admin. Code § R11-1-1131

Former Rule 11:31; Amended effective April 7, 1976 (Supp. 76-2).