Ariz. Admin. Code § R11-1-408 – Construction of underground ventilation doors | Midpage

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Arizona Administrative Code

R11-1-408

Ariz. Admin. Code § R11-1-408

Construction of underground ventilation doors

Effective Aug 18, 1980State Mine Inspector

1. Substantially constructed.
2. Covered with fire-retardant materials, if constructed of wood.
3. Maintained in good condition.
4. Self-closing, if manually operated.
5. Equipped with audible or visual warning devices, if mechanically operated.

Ventilation doors shall be:

Historical Note

Adopted effective August 18, 1980 (Supp. 80-4).