N.M. Code R. § 14.9.4.20
B. Any boiler that is not considered an automatic boiler and located in a publicly owned place of public assembly shall have a full-time, licensed operator. The boiler operator shall not leave the operating floor for more than 10 minutes at any one time without leaving on duty an operator with the same classification as the boiler operator.
[1-1-98; 14.9.4.20 NMAC - Rn, 14 NMAC 9.4.20, 08-01-03; A, 05-01-06]