Image is annotated "View of Rock Excavation on left bank 6-7-59" Stamped on reverse "Richards Bros Penzance"
Image showing shuttering for concrete and ladders. It is annotated "Excavation & Concrete left bank of river 3-9-59" Stamped on reverse "Richards Bros Penzance"
Image showing general view of the excavation works for Drift Dam. There are a few men standing in the middle of the photograph. It is annotated "Works on right bank of river looking upstream 3-9-59" Stamped on reverse "Richards Bros Penzance"
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 Penzance"
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 reverse "Richards Bros, Penzance"
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"
Overview of the dam and valley, and reservoir almost full. The image is annotated "Drift Reservoir nearing completion 1-2-61" It is stamped on the reverse "Richards Brothers, 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"