Nashville General Hospital School of Radiology class at Murrey Medical College poses for a group picture during a tour of Old Hickory Dam in Hendersonville, Tenn., Thursday, Feb. 6, 2014. (USACE photo by Amy Redmond)
Will Garner, U.S. Army Corps of Engineers Nashville District power house operator, explains to a group of students from Nashville General Hospital School of Radiology at Murrey Medical College how water passes More
Surrounded by towering generating units within the power house, Chris Sherek, power house operator, speaks about how each generating hydropower unit's speed is controlled to students from the Nashville General More