Peterborough Lift Lock, 1904.

The Peterborough Lift Lock is part of the Trent Waterway, linking Lake Ontario with Georgian Bay. At 65 feet, it is the highest lift in the world. Excavation started in 1896 and was completed in 1904 at a cost of $500,000.
John Bertram and Sons Company fabricated the massive hydraulic rams which lift the lock chambers. They were made of cast steel rather than the traditional cast iron. The parts were subjected to thorough testing and provided important data on the  performance of this new material at that time.

Peterborough Lift Lock, 1904.

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