Minn. Stat. § 624.23: CONSTRUCTION OF SECTIONS 624.20 TO 624.25.

Nothing in sections 624.20 to 624.25 shall be construed to prohibit any resident wholesaler, dealer, or jobber, from possessing or selling at wholesale fireworks which are not prohibited; or the possession or sale of any kind of fireworks for shipment directly out of the state; or the possession or use of fireworks by airplanes and railroads, or other transportation agencies for signal purposes or illumination; or the possession, sale, or use of blank cartridges for a show or theater, or for signal or ceremonial purposes in athletics or sports, or for use by military organizations or for use as a bird or animal repelling device.