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Close-up image of the valve tower construction. The circular valve can be seen centre right. Two men standing on scaffolding poles and more seen above. It is annotated "Valve tower foundation. Concrete etc 3-9-59" Stamped on reverse "Richards Bros…

General view of excavation works. One man can be seen in the centre of the image above the track by a ladder. Image is annotated "Works on left bank of river looking upstream 3-9-59" Stamped on reverse "Richards Bros Penzance"

View of the layers of excavation. Image is annotated "Excavation & concrete left bank of river 3-9-59"
Stamped on reverse "Richards Bros Penzance"

General view of workings. Annotated "General view from left bank 30-9-59"

General view of excavation works. Several men working on the site, including a man walking along the shuttering (centre) and also men along scaffolding on right. Annotated "Concrete works right bank of river looking upstream 3-9-59" Stamped on…

View looking down site, finished concrete on left. Men scrambling over scaffolding and pipework on the left centre.
Annotated "General view from right bank 30-9-59"

Annotated "Excavation for spillway foundation"
Puddles to the foreground, two men standing centre right. Scaffolding draped with material/overalls.

View of shuttering for concreting. Men at work by long ladder in centre and above cylinder top right.
Image is annotated "Construction work left bank 30-9-59"

Close view of machinery and crane bucket, man sitting on a rock on extreme left, shuttering in background. Image is annotated "Foundation of spillway looking upstream 30-9-59"

Overview of excavation work, several men at work, some on scaffolding bottom right and others by the pump in the centre.
Annotated "Overflow section excavation 4-12-59"
Stamped on reverse "Richards Bros, Penzance"

Man at top of image working on a trench, broom in middle gives idea of scale
Image is annotated "Excavation of trench for 18" diameter supply pipe 7-5-59"
Stamped on reverse "Richards Bros Penzance"

View of excavation work. Man in shirt and tie front left, several men working towards the rear. Shuttering and flues visible.
Annotated "Tunnel Monolith, looking upstream 6-7-59".
Stamped on reverse "Richards Bros, Penzance".

Concrete Pour into Tunnel monolith, two men working in the shuttered area at end of hose, others are above. Image taken same day as DD.018.
and annotated "Placing concrete in tunnel monolith 6-7-59."
Stamped on reverse "Richards Bros Penzance"

Image is annotated "General view of excavation, plant, etc. on right bank of river 7-5-1959"
Number of lorries and machinery show scale.
Stamped on reverse "Richards Bros Penzance"

Drift Dam.

Work started by Sir Robert Mc Alpine & Sons on 1 Mar 59 completed 1 Apr 61

Drying nets after 'barking' (soaking in preservative) Newlyn Harbour. The vessel in the distance is waiting to to come into the Harbour to load Penlee quarry stone at the South Pier.
One of Stevenson's 75' wooden trawlers can be seen on the…

Drive shaft abandoned in the undergrowth.

Couple had probably driven from John O' Groats note AA Road Service Motorbike