37705 & 37694 approach Chinley on 12 March 1998 with the 6H71 07:35 Oakleigh to Tunstead stone empties. This was just before Class 60s took over these workings. This was something that would not have been possible, had not the vintage vacuum braked hoppers that were used on these trains for years been replaced a few months earlier by these air braked PGAs.