Explosion-proof and flame resistant fuel tanks, consisting of metal or metal alloys, with a heat conductive filler, particularly in the form of globes or rolls of metal or metal alloys, the latter particularly surrounded by a metal grid; safety mesh and molded shapes made therefrom, consisting of metal or metal alloys, particularly in the form of globes or rolls, particularly as filling material for tanks, particularly fuel tanks for the absorption of explosive substances, particularly of liq...