J~3/300.4 SUBJECT: 3 Dececber 1953 Schedule of Hessages Concerning Detonations During CaSTLs (2) Verification or revision of radiological outlock Sornative populated atolls. (3) Verification or roviaion of radiokgical impact on. air ind surface routes including recommendstiuns rolctiva to upaning air and surface routos, 2. In addition to these schedulod messages, you will be infcrmed as quickly as pessible of any” unexpected and significant dovelopacnts. If this plen of notification does not appoar sdequate, £¢ is requested that you indleste your dosires to thie headquarters. a/P, *. Clarkson t/P. %. CLARKSON iajor Gunoral, U.S. .ray Commander C-/2