En route to location, the Canadian Pacific train's engine was wrecked by a rock slide that killed the engineer. The actors were in the car behind the engine and were battered by falling rocks but escaped disaster. Just a few days later, a snow slide at Lake Minnewanka threw several actors and cameras off an icy ledge of a glacier. Meantime, actress Viola Dana was traveling to meet the company when an earthquake erupted. Actor Tom London dislocated three vertebrae in a fall. A carpenter broke his leg when he was thrown from a barge into rapids and another actor nearly drowned in the rapids.