U.S. Department of Labor Mine Safety and Health Administration Protecting Miners' Safety and Health Since 1978

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Approval marking.

Each approved diesel engine shall be identified by a legible and permanent approval marking inscribed with the assigned MSHA approval number and securely attached to the diesel engine. The marking shall also contain the following information:

(a) Ventilation rate.
(b) Rated power.
(c) Rated speed.
(d) High idle.
(e) Maximum altitude before deration.
(f) Engine model number.