27-349. Tracks and roadbeds; maintenance underground When mechanical haulage is in an underground mine, the tracks, roadbeds, rails, joints, switches and frogs shall be constructed, installed, bonded and maintained in a manner consistent with the speed and type of haulage operation being conducted.
Arizona Legal Code
§ 27.349
Source: https://www.azleg.gov/ars/27/00349.htm· Version 2026