Governor General of Canada, Earl of Athlone, watches shell cases being made in factory.
Title reads: "Canada's Great War Effort".
Various shots of Earl of Athlone, Governor General of Canada, inspecting munitions factory. He wears military uniform. Various shots of male factory workers operating machines making shell casings. Various shots of women factory workers checking the cases. M/S of men in warehouse stacking crates of shell cases to be shipped to Britain.