12" Mains diversion for Opencast Coal workings at West Hallam I think - near to Straws Bridge. I have a feeling that the open cast workings got too close and the main collapsed into the workings.

In the group of 3 - Cess Woodward can be seen talking to Pete Allen (lived and looked after the pumphouse at Stanton by Bridge - which was kept in immaculate condition!)

Photo from Malc Woodward