Ariz. Admin. Code § 11-1-422
Current through Register Vol. 30, No. 50, December 13, 2024
Underground diesel-powered equipment shall be equipped with a stainless steel exhaust system including conditioner and satisfactory diluting device, which will reduce toxic gases to a minimum before they are released into the mine atmosphere. (Except if limestone and water are used, scrubbers may be carbon steel.)
Ariz. Admin. Code § R11-1-422