Inspecting electrical equipment at the Cordell Hull Dam
CARTHAGE, Tenn. — Ryan Frye (left), U.S. Army Corps of Engineers Nashville District Hydropower Branch maintenance manager, and James Graham, senior electrical engineer for the Nashville District Engineering Design Group, inspect a transformer at Cordell Hull Dam here, March 6, 2011. The Nashville District and Hydroelectric Design Center in Portland, Ore., which is the Corps’ national center of excellence for hydroelectric and large pumping plant engineering services, are working together on a district-wide assessment of the district's nine switchyards.