During the first week's partial blockade of the Chiltern lines for Project Evergreen 3 upgrades, various works trains were routed over the line. This is 6Z79, 12:54 from South Ruislip to Eastleigh Yard with 66170 hauling forty MHA wagons loaded with spent ballast. It is passing through Haddenham & Thame Parkway station at 13:39, initially bound for reversing and layover at Fenny Compton, not due to reach Eastleigh until 22:22. Tuesday 16th August 2011. Digital Image No. GMPI10048.