T.W.A. PLOTTERS REPORTED SILENT
TWA repts it has had no further contact with extortionists who placed bombs aboard its jetliners in attempt to obtain payment of $2âmillion in ransom; says no ransom has been paid; carrier's pres Wiser says âTWA believes that the bomb threat that caused this situation has run its course'; authorities express belief that extortionists are present or past indus employes who have intimate knowledge of airline workings; security precautions and their effects on air travel discussed; Hansa aircraft, specified by extortionists to be used to deliver ransom to Atlanta, Ga, illus at Westchester County Airport