Tapping Canada's resources

News magazine items: 1. In the Salt Mines: At Ojibway, Ontario, a journey to glittering white caverns is shown. 2. Trans-Canada Pipeline: The toughest stretch of the world’s longest gas pipeline—northern Ontario—is viewed. 3. Plywood for the World: At the largest plywood mill on Canada’s west coast, strips of veneer are peeled and then glued to form plywood.