[Richard Farrant]

In Normandy, near Port en Bessin, is a museum of equipment that was pulled from the sea bed, lost during the landings. The rubber on the tank wheels is a crisp as the day made, with moulded lettering still sharp, while the rest of the tank is a crusted hulk. Quite how long the rubber would last if able to use, is unknown, but it does give indication that the surface does not break down. No ultra violet light on the seabed helps I guess.