1848 Ala. Acts 121–22, An Act To Prevent the Storage of Gun-powder in Larger Quantities Than One Hundred Pounds Within the City of Mobile, § 1.

It shall not be lawful for the Corporation of the City of Mobile, or any person or persons, to receive or keep, or have on storage in any building of any kind within three miles of the Mobile River, or Bay, gun-powder or gun-cotton or any explosive material, in larger quantities than one hundred pounds, unless the same be kept on one of the islands in the Mobile river or bay, in the neighborhood of the city of Mobile, but then the same shall not be kept at any point within the distance of one mile of the eastern bank of said river.