After the Second World War, the building was converted into a woollen mill by a consortium of local sheep farmers.
Street renamed the operation "Meirion Mill" and turned it into a tourist attraction, weaving and selling a wide range of woollen products.
He learned that a narrow gauge steam locomotive called Trixie was available for purchase from the nearby Centre for Alternative Technology.
Along with the track, Alan Keef supplied a diesel locomotive and two passenger carriages that originated at Butlin's Filey holiday camp.
[1] A few wagons, obtained from the Gartheiniog Slate Quarry on the Hendre-Ddu Tramway, remained on display and in storage at Meirion Mill in 2016.