This locomotive is an Austerity type locomotive built for the Second World War effort by W G Bagnall in 1944. Bagnall built the locomotive as a sub-contractor to Hunslet Engine Co Ltd. Bagnall built 52 of the 377 that were built for the War Department between 1943 and 1947. This locomotive carried the number WD75170. The LNER bought some of these locomotives which became the J94 class.
The locomotive was purchased by the National Coal Board (NCB). It is recorded as having worked in the Dulais Valley. The locomotive regularly lugged 200-300 tons of empties up and the fulls of anthracite coal, sometimes a lot faster than expected, down the Dulais valley on the Graig Merthyr system based at Pontardulais near Swansea. The gradient on the line included 2½ miles of 1-in-40 as well as 45-degree curves.
The locomotive is now on static display at Cefn Coed Colliery Museum.
The museum is located near the village of Crynant in the Dulais Valley five miles north of Neath and it tells the story of coal mining at the Cefn Coed Colliery, once the deepest anthracite coal mine in the world. Cefn Coed was one of the most dangerous coalmines in Wales where many men lost their lives.