<prompt> Qedela le nkulumo elandelayo: Ngo-1979, uDaniel Sheehan, uSara Nelson kanye nabaningi babangane nabakhi becala likaSilkwood bahlangana eWashington, D.C. ukuze basungule iChristic Institute. Eminyakeni engu-12 eyalandela, njengomeluleki Jikelele weSikhungo, uSheehan wasiza ekushushiseni amanye amacala adume kakhulu entshisakalo yomphakathi ngaleso sikhathi. UChristic wamelela izisulu ze-  <response>: inhlekelele yenuzi eThree Mile Island. 