This is the control room for the Unit 1 reactor at Exelon Corporation Three Mile Island nuclear generating station in Londonderry Township, Dauphin County. 
May 22, 2017.

What will become of Three Mile Island’s nuclear waste if the plant closes?

In the absence of a long-term solution, the country’s nuclear power plants are left with one option: indefinite on-site storage.

By Wallace McKelvey, PennLive