Original Big Mack (XL)

GTM's Mack started life as an American military tank recovery tractor during the Second World War. In the early 1960's it was bought by Aberdeen County Council and converted into a snowplough. The dissolution of Aberdeen County Council saw the Mack pass to Grampian Regional Council in 1977. The Mack was in service as a snowplough until 1985, and it was acquired by Grampian Transport Museum not long after.