Pairs of Class 56s working freights were certainly not common and were usually the result of a failure, as is probably the case here. 56095 Harworth Colliery makes a smoky departure from Milford Sidings with 56091 Castle Donnington Power Station on 25 October 1995. Milford Junction (Monk Fryston) is a popular spot to photograph coal trains heading for nearby Eggborough and Drax power stations, although apart from unusual events like this it can get a bit monotonous!