New Mexico Administrative Code
Title 19 - NATURAL RESOURCES AND WILDLIFE
Chapter 6 - MINE SAFETY
Part 5 - NEW MEXICO MINE SAFETY CODE FOR ALL MINES INCLUDING OPEN-CUT AND OPEN-PIT
Section 19.6.5.8 - SIGNALS FOR ALL MINES

A. 1 bell, stop immediately if in motion; 1-2-1 bells, hoist muck; 2-1-2 bells, release cage, skip or bucket; 2 bells, lower; 3-1 bells, hoist persons; 3-2 bells, lower persons, if bells rung slowly move slowly; 7 bells, danger signal, followed by station signal calls cage to that station. This signal takes precedence over all other except an accepted blasted signal.

B. Additional mine specific signals may be used if approved by the state mine inspector.

C. Automated hoists shall be exempt from compliance with the bell signal requirements.