nsm - plateway

A short rake of waggons. All running on double flanged wheels.
The red one is a wooden one for finished slate - capacity around 2 tons, these were kinder to the fragile slates but needed vastly more maintenance, so were replaced by iron versions, and the capacity was increase to 3 tons. Appears to have been converted to carry chippings or similar.
The other vehicles appear to be "low" bolsters, which would have carried slate in slab form, or large waste pieces.