Lee ebe a n'okpuru ma zaa ajụjụ a n'otu asụsụ ahụ dị ka ebe a: Ebe a: US mepụtara usoro mmepụta Girdler sulfide chemical exchange production process<unk> nke mbụ gosipụtara na nnukwu ụlọ ọrụ Dana, Indiana na 1945 na Savannah River Plant, South Carolina na 1952. DuPont na-arụ ọrụ SRP maka USDOE ruo 1 Eprel 1989, mgbe Westinghouse weghaara ya. Ajụjụ: Olee mgbe Dupont rụrụ ọrụ ruo mgbe USDOE?
Eprel 1, 1989