Captions read: Moving outside forms - Rails to hold sheeting - hand excavation in hardpan -Backfilling - 1st foundation fill - Rock Cut - Hardpan sloughed into trench after rain - Camp 4, mile 71 - Traveller.
Forms part of Fonds 15. Series consists of photographs taken by GWWD employees during the building of the Greater Winnipeg Aqueduct that brings water from Shoal Lake to Winnipeg. Photos are made up of nitrate negatives and lantern slides.