Gimme that Old Time Power

1920. The 70,000 horsepower hydraulic turbine component for the Niagara hydroelectric power plant at the Allis-Chalmers Manufacturing Company, Milwaukee, Wisconsin, USA

I don't know why, but I am always surprised when I see old photos of big stuff being built. I suppose it's because we have plenty of photos of the finished product, but I seldom see pictures of the construction. It looks like this was one of three turbines built to drive 25 Hz generators.

Via Just A Car Guy