11th August 2019 Having completed another overnight ballast drop in Cornwall using a rake of Network Rail MRA side tippers, Colas Rail Freight Class 66 No.66848 top and tails with No. 66850 'David Maidment OBE www.railwaychildren.org.uk' climbing to Whiteball Tunnel on Saturday 11th August 2019 operating 6C20 09:30 Lostwithiel - Westbury. (Photo: Simon Harling)