<prompt> Pedzisa mutsara unotevera: Bechtel akabatana nebhizimisi remhuri muna 1948. Kunyange zvazvo pakutanga aida kupinda mukuvaka dzimba, akagutsikana nababa vake nokuratidza mapurojekiti epasi rose eBechtel Corporation murwendo rwemavhiki matatu. Akatsiva baba vake, Stephen Bechtel Sr., semutungamiri weBechtel Corporation muna 1960 uye sachigaro muna 1969. Basa rake nekambani rakapfuura makore 30 kusvikira paakaenda pamudyandigere muna 1990. Munguva yake, kambani iyo yaimbozivikanwa nebasa rayo paHoover Dam uye Bay Area Rapid Transit, yakawedzera tsoka yayo yepasi rose nekushanda paChannel Tunnel pakati peFrance neUnited Kingdom, King Khalid International Airport muRiyadh pamwe neJubail Industrial City muSaudi Arabia. Iyi yokupedzisira inorangarirwa kuva imwe yemapurojekiti makuru zvikurusa ounyanzvi hwokugadzira zvivako enguva yacho. Kambani iyi yaibatanidzwa mukuvaka mapuratifomu emafuta muNorth Sea, zvivakwa zvegasi rakanyungudutswa muAlgeria, Indonesia neUnited Arab Emirates, uye zvakare mukuchenesa nzvimbo yenzvimbo yenyukireya  <response>: Three Mile Island muPennsylvania. 