Ardnacrusha and Waterford: After the Lecture - Can you help?

From the lecture on Ardnacrusha. These pictures were taken in Waterford at the time of the establishment of the ESB, unfortunately there are no names for the staff. Can you help or know any one who can? 

The staff of Keating and Gaule - Do you recognise anyone? (click here to enlarge)

These are the photos of the first staff outside the Gracedieu premises. Can anyone help identify them?