<prompt> Qedela lo musho olandelayo: UFrank N. von Hippel wabhala ngoMashi 2011, ukuthi naphezu kwe-  <response>: Ngenxa yenhlekelele yaseThree Mile Island ePennsylvania, i-NRC ivame ukuba namahloni kakhulu ekuqinisekiseni ukuthi ama-reactor ezentengiselwano aseMelika asebenza ngokuphepha: 