The same wall looking east. (Photo: Richard Emsley)

Casting the covers for the back-pumping chambers. (Photo: Richard Emsley)

The "flower-pots". These are used to form the circular holes required for access to the pump chambers. The finished concrete will be flush with the top of the stop plank channel shown on the left of the picture. (Photo: Richard Emsley)

(Photo: Richard Emsley)

Installing the offside upper quoin. (April 13 2006) (Photo: Richard Emsley)

The quoins are the semi-circular recesses that the lock gate hinge post rests against. This provides the water seal for wall side of the gate. (Photo: Richard Emsley)

Time for a well earned break. (Photo: Richard Emsley)

Concreting the nearside copings above the upper gate recess. (Photo: Richard Emsley)

One of the steel arches in place for the bridge across the tail of the lock. (Photo: Richard Emsley)

The formwork under construction for the bridge footway. (Photo: Richard Emsley)

July 6, 2006. The formwork in place for the bridge. Slats across the supports will be fitted prior to concreting.(Photo: Richard Crook)

July 6, 2006. The bridge arch clearly seen with the reinforcing for the concrete arch in the foreground.(Photo: Richard Crook)