StacksVerified U.S. regulatory reference

30 CFR §57.14200

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Before starting crushers or moving self-propelled mobile equipment, equipment operators shall sound a warning that is audible above the surrounding noise level or use other effective means to warn all persons who could be exposed to a hazard from the equipment.