Aeronautics. Accidents Eight die in Rocky Mountain Airways crash at Aspen. RMN Ja 23, 1970 p.1,5 Post Ja 23, 1970 p.4 Automatic Downed Aircraft Marker presented by Burton Instrumentation, Inc. Post Ja 21, 1970 p.24 New Mexico scientist killed in air crash near Colorado Springs. Post Mr 27, 1970 p.16 Jay E. Burton invents ADAM (automatic downed aircraft marker) signalling device to facilitate locating plane wrecks. Post Empire My 24, 1970 p.32-36