A good model of these steel bodied vans which were specially built and fitted with secure doors for the transport of explosives.

Originally this was principally gunpowder and frequently used to transport explosives for mines and quarries, this name was retained for use on these vans long after other exploseives were developed. During peacetime the cargoes included all kinds of explosives and potentially explosive material, plus ammunition deliveries for reserve and cadet units across Britain.