An inhalation hazard placard must be used when any amount of the material is being transported
If the words "Inhalation Hazard" are on a package or its shipping paper, you must display the proper inhalation hazard placards, as well as any other necessary placards. This applies regardless of the amount of materials being carried.
B An inhalation hazard placard must be used, but only if more than 100 pounds of the material are being transported
C Air masks must be provided to anyone handling the cargo