Interior of Pulp Mill No. 1 – The Grinders

August 7, 1896
Photo courtesy of Sault Ste. Marie Museum
Waterwheels spin mortise gears, churning spruce trees into 150 tons of pulp per day.
August 7, 1896
Photo courtesy of Sault Ste. Marie Museum
Waterwheels spin mortise gears, churning spruce trees into 150 tons of pulp per day.