La Colle Falls - "lock looking downstream"
La Colle Falls - "tail race excavation"
La Colle Falls - "tail race excavation"
La Colle Falls - "first breach in upstream coffer dam"
La Colle Falls - "blowing out coffer dam"
La Colle Falls - "coffer dam removed"
La Colle Falls - "plant north bank of river"
La Colle Falls - "looking upstream"
La Colle Falls - "erecting first crest and apron forms"
La Colle Falls
La Colle Falls - "pant and excavation north bank"
La Colle Falls - "reinforcement in place"
La Colle Falls - "reinforcement in place"
La Colle Falls - "moving forms"
La Colle Falls - "intake excavation and forms"
