In transferring explosives from cars to vessel or one vessel to another, explosives must be handled by hand or regulation chute and mattress. If difference in elevation between vessel and car, or condition of weather, renders it impossible to transfer or load by hand or chute, mechanical hoists and a special crate or basket may be used and the explosives carefully lifted in this crate or basket from car float or deck of one vessel and carefully lowered on the mattress on the deck of the other. Explosives transferred in this manner must not be handled roughly. They should be hoisted and lowered carefully and only deposited or lowered on a mattress. Explosives must be transferred from a crate or basket into hold of boat by hand or regulation chute and mattress. The transfer of explosives by crate or basket into the hold of a vessel is prohibited. Careful men must be selected to handle explosives. Packages of explosives must not be thrown, dropped, rolled, dragged, or slid over each other or over the decks of boats or floors of cars. Dynamite boxes should be loaded with top side up. Powder kegs should be loaded with seams up. All explosives must be handled carefully. City Code, 1927, art. 15, §82 1950, art. 11, §84 1966, art. 10, §83 1976/83, art. 10, §83 Ord. 13-336