Inscription:

On March 28, 1979, and for several days thereafter — as a result of technical malfunctions and human error — Three Mile Island’s Unit 2 Nuclear Generating Station was the scene of the nation’s worst commercial nuclear accident. Radiation was released, a part of the nuclear core was damaged, and thousands of residents evacuated the area. Events here would cause basic changes throughout the world’s nuclear power industry.

https://www.hmdb.org/m.asp?m=900