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 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Placing permanent cage into position in shaft

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Concrete pilaster around 2 30inch I beams. Notice crack in them

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Concrete crew pouring the ring through an elephant trunk. Top view of ring showing wooden form as well as re-inforcing steel work. Just about completed and ready for pouring

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Concrete crew pouring the ring through an elephant trunk. Top view of ring showing wooden form as well as re-inforcing steel work. Just about completed and ready for pouring

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Grouting base for steel headframe

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Photographs were taken by Fred Helie, a worker on the project sometime between 1950 - 1958

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Two 30 inch steel I beams welded together and used as support for concrete ring. Four of the supports were set up inder the ring

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     10 ton mining locomotives, along with cars, flat cars, powder cars, conveyor loader, all of which were never used as mucky condition of the floor of the tunnel would not permit

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Concrete dumpter used in tunnel to pour curbs on which tracks were laid for the travelling gantry as well as the invert tank gantry

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     10 inch steel pipe which was lowered from surface above. These were random lengths of 20 to 30 feet and were welded to one another as they were lowered into the hole. A cushion-aire pot was set under it, and through this the concrete ejected into the hopper. From hopper ...

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     10 inch steel pipe which was lowered from surface above. These were random lengths of 20 to 30 feet and were welded to one another as they were lowered into the hole. A cushion-aire pot was set under it, and through this the concrete ejected into the hopper. From hopper ...

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Twisted cage back to the surface elevation

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Groove in 4 x 8 fir guides were gouged by safety dogs

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Dismantling the erection jumbo to be moved from no. 1 to no. 2 tunnel

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Planking ribs in crosscut section against falling rocks

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Removing temporary headframe from inside permanent headframe

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Temporary headframe at Shaft no.2

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     In this picture we see the workmen cleaning the floor of the invert, on the curbs are tracks on which all machineries are moved

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Lowering loading bucket to bottom of grizzly

 Helie, Fred, Construction of Ontario Hydro tunnels for the Sir Adam Beck - Niagara Generating Station #2 , Niagara Falls Public Library: Niagara Falls, 1953.     Permanent Rock Bin just completed