Nothing in this chapter shall prevent the retail sale and use of explosives or signaling flares used in the course of ordinary business or industry, or gold star producing sparklers, which contain no magnesium or chlorate, toy snakes which contain no mercury, smoke novelties and party novelties, which contain less than twenty-five hundredths of a grain of explosive mixture, or shells or cartridges, used as ammunition in firearms, or blank cartridges for a show or theater, or for signal or ceremonial purposes in athletics or sports, or for use by military organizations, or the sale of any kind of fireworks provided the same are to be shipped by the seller directly out of the state.
(KRS 227.730) (`91 Code, § 93.04)