Three Mile Island nuclear power plant

The turbines for the Unit 1 reactor at the Three Mile Island Nuclear Facility are still in use Wednesday, March 3, 1999, in Middletown, Pa. On March 28, 1979, one-third to one-half of the uranium-filled core of Unit 2's reactor experienced a melt down and created the first and only general emergency declared at a U.S. nuclear plant. On March 28, 1999 will be the 20th anniversary of the nation's only nuclear accident.