This locomotive was constructed in 1945, to a Hunslet Engine Company design, at Vulcan Foundry in 1945 and was deployed by the War Department on the Longmoor Military Railway. There it became WD 75282 and was named Insein which is a township in Yangon which then was called Burma (now Mayanmar).
See LNER class J94 for details.
It was then transferred to the Woolmer Institutional Railway.
In 1959 it was sold to the Hunslet Engine Company who rebuilt it as Works No 3879 in 1961.
It was then sold to the National Coal Board to work initially at Cambrian Colliery in November 1961. It then moved to Garw Colliery in April 1967 before being moved going to Mountain Ash in July 1979.
Whilst at Mountain Ash Colliery the locomotive was given the name Haulen after the granddaughter of the colliery manager. The name translates from the Welsh as white sunlight, bright sunlight or bright star.
In July 1981 following its industrial service the locomotive was placed on loan at the Caerphilly Railway Society, who were based in the former GWR works at Caerphilly, and was later bought by them.
The society was later evicted from Caerphilly and the locomotive was moved to the Gwili Railway where the society transferred to.
The locomotive was restored at the Gwili Railway where it operated until early 2016 when it was withdrawn for a ten year overhaul.