Close-up image of digging the monolith for the dam. Four men can be seen in the trench to the left of the tall ladder digging with hand tools. It is annotated "Foundation for monolith 3-9-59"
Stamped on reverse "Richard Bros Penzance"
View along channel towards the McAlpine works on left. Several men building a scaffolding bridge across the channel.
The image is annotated "Downstream diversion channel 3-9-59"
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…
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"
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"
View of men positioning wooden joists for shuttering, preparation for concreting. 3 men watching from above. Image is annotated "Typical shuttering 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"
General view of construction across the valley. Image shows a crane middle left and three men working on scaffolding in the centre. Note no safety equipment.
Image is annotated "View from left bank of river 4-12-59"
Close view of construction , taken on same day as DD.045. Men can be seen standing at the base of the monolith and one at the bottom of the image.
It is annotated "Profile of monolith on right bank"
Image showing men working as concrete is being poured. The image is annotated "Concrete being placed. Overflow weir section 1-1-60"
Stamped on reverse "Richards Bros, Penzance"
Image shows men working at the base of the monolith during a concrete pour. Two men working on bare scaffolding above with no harnesses or safety equipment.
Annotated "Construction work on lemftbank 1-1-60"
Stamped on reverse "Richards Bros,…