All explosives to be transported from land by water, or from water by land, are to be subject to all of the City, state, and national laws in reference to the loading, unloading, and handling of explosives. City Code, 1927, art. 15, §50 1950, art. 11, §52 1966, art. 10, §52 1976/83, art. 10, §52 Ord. 13-336