Barge and vessel crews and persons engaged in loading, unloading, or handling explosives must not have or carry matches, firearms, or cartridges on their persons. City Code, 1927, art. 15, §79 1950, art. 11, §81 1966, art. 10, §80 1976/83, art. 10, §80 Ord. 13-336 Ord. 76-052