American Hydro have hired CEO Machining to perform onsite machining services at the famed John W. Keys III Pump-Generating Plant, which is part of the Grand Coulee Dam. Work includes machining the embedded parts and the lower wear ring of units 5 and 6.

The Grand Coulee Dam is owned and operated by the US Bureau of Reclamation, and is the largest power station in the United States by nameplate-capacity at 6,809 MW. The dam is one of the largest concrete structures in the world, containing nearly 12 million cubic yards of concrete.