Exclusion(s): Establishments primarily engaged in:

*the delivery of mail in bulk, on contract to the Post Office (481, Air Transportation, or 482, Rail Transportation, or 484, Truck Transportation); *providing courier services, including separate courier establishments of the Post Office (49211, Couriers); *delivering advertising material, door-to-door (54187, Advertising Material Distribution Services); and *providing mail box services along with other business services (56143, Business Service Centres).