South Derbyshire Water Board
Mains Diversion for West Hallam Opencast Site
Cess Woodward (right) standing looking at the pipe with Arthur Broadhead. Note that the pipes are flanged and therefore don't require thrust blocks at the bends to prevent them blowing off. As seen in this photo there is no ground behind for a thrust block to oppose the pressure in the pipe.

Photo from Malc Woodward