. . "1952" . . "1952-03-25" . . . . . . . . "Riley Peart Bechtel" . . . . "Riley P. Bechtel" . . . . . . . . "Former chairman,Bechtel Corporation" . . . . . . . . . . . . . . . . . . . "Riley P. Bechtel" . . . . . . .