Conn. Agencies Regs. § 29-349-180
A maximum of 5,000 blasting caps or electric blasting caps may be transported on the same approved vehicle as follows: The blasting caps or electric blasting caps shall be packed in authorized D.O.T. specifications outside shipping containers; or in prescribed inside D.O.T. packages in an outside box made of one inch lumber with suitable padding material not less than one-half inch thick, or a box made of not less than 12 gauge sheet metal lined with plywood or other suitable material not less than 3/8 inch thick so that no metal is exposed. Hinged cover and fastening devices are required on such boxes. These boxes shall be loaded in approved vehicles so that contents or box will be immediately accessible for removal.
Conn. Agencies Regs. § 29-349-180