StacksVerified U.S. regulatory reference

30 CFR §57.4561

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Stationary diesel equipment underground shall be—
  1. (a)Supported on a noncombustible base; and
  2. (b)Provided with a thermal sensor that automatically stops the engine if overheating occurs.