46 C.F.R. § 111.105-45
(a) The following areas are Class II, Division 1, (Zone 20) locations on vessels carrying bulk agricultural products that may produce dust explosion hazards:
(b) The following areas are Class II, Division 2, (Zone 22) locations on vessels carrying bulk agricultural products that may produce dust explosion hazards:
Note to § 111.105-45: Information on the dust explosion hazards associated with the carriage of agricultural products is contained in Coast Guard Navigation and Vessel Inspection Circular 9-84 (NVIC 9-84) “Electrical Installations in Agricultural Dust Locations.”
[CGD 94-108, 61 FR 28285, June 4, 1996, as amended by USCG-2020-0075, 88 FR 16367, Mar. 16, 2023]