I don't think so.
I reckon they are of the Corkickle Brake at Whitehaven.
http://www.cumbria-railways.co.uk/corkickle_brake_whitehaven.html
It was used by Marchon to connect their chemical works with the main line.
I visited Haig Pit, next door (sort of), to Marchon on the cliff above Whitehaven back in the 1970s. The incline on the NCB railway had been put out of use by a landslip. I don't know if Marchon used coal but it could be that the pics show 21T hoppers on the brake being used to get Haig coal onto BR.
ETA Or down to the harbour in a roundabout way as the NCB incline was OOU.