Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: United States yakagadzira Girdler sulfide chemical exchange production process<unk>iyo yakatanga kuratidzwa pamwero mukuru paDana, Indiana plant muna 1945 uye paSavannah River Plant, South Carolina muna 1952. DuPont akabata SRP nokuda kweUSDOE kusvikira 1 April 1989, apo Westinghouse yakatora.  Mubvunzo: Dupont akashanda kusvikira rini nokuda kweUSDOE?
1 Kubvumbi 1989