It shall be unlawful for any person to receive, keep, store or have in one place within the limits of the City, more than fifty (50) pounds of gun powder, dynamite, nitroglycerine or other explosive substance or more than five hundred (500) gallons of kerosene oil or one hundred (100) gallons of gasoline, except by permission from the City Council; provided, that nothing herein shall be construed to prohibit or prevent the keeping, within such limits, of shotgun and rifle shells or cartridges and cartridge percussion caps by any person to be disposed of in the usual course of business. (Ord. 91-35, 11-19-1991)