<prompt> Ramba uchinyora ndima iyi - Nokuderera kweindasitiri yesimba renyukireya pashure pengozi yeThree Mile Island  <response>: uye njodzi yeChernobyl, Westinghouse yakasiya chivakwa chikuru pakutanga kwema1990, uye nzvimbo yacho yakatorwa kune vanoverengeka varimi vezvekutengesa. Muna 1994, boka raimbova vashandi panzvimbo iyi rakaumba Pittsburgh Materials Technology Inc. PMTI kuvaka pamusoro pezvigadzirwa zvakagadzirwa neWestinghouse, kusanganisira advanced refractory metal alloys. Muna 2007, PMTI ichiri kunyungudutsa, kugadzira uye kuyedza alloys senge niobium-base, tantalum-base, uye vanadium-base maumbirwo kune akasiyana vatengi mune ese ari maviri aerospace nemaindasitiri zvikamu. 