Captions read: Placing foundation fill under water - Camp 4, mile 72 - Quicksand flowing out of holes, side of cut - Quicksand running out overtop of hardpan.
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.