U, S, ATOMIC ENERGY CCMMISSION DEPARTMENT OF DEF JOINT OFFICE OF THST INFORMATION Washington 25, No, Tel. D. Cc. A-157 (J-12) 408833 FOR IMMEDIATE RELEAS HAzelwood 7-7831 Ext. 3/46 (Thursday, June 26, 1 DANGER AREA FOR JOHNSTON ISLAND NUCLEAR TESTS ANNOUNCED; UNAUTHORIZED ENTRY PROHIBITED As part of the safety precautions for the forthcomi nuclear tests at Johnston Island, a surface danger area aroun the island will be established effective July 25, 1958. On May 2, 1958, it was announced that certain shert range defensive missiles with nuclear warheads would be fired from Johnston Island, as pat of the HAKDIACK series of nucle tests in the Tacific, Johaston Island is located abour 540 statute miles southwest of the nearest inhabo:ted island of th Havailar chain and about 900 statute miles from the next near inhabited island. All ships are cautioned to remain clear of an area bounded by a circle of 400 nautical mile radius centered at t following geographic coordinates: Longitude 169° 31' West Latitude 16° 45' North. It is estimated that the surface danger area will remain in e fect for a period of approximately tnree or four weeks, Notice of the establishment of the danger area is being given the widest possible distribution thrcagh marine and internati organizations. An air danger area will be established by warnings aircrart issued by the Civil Aeronautics Administration short before the firing time planned for eath test. Thats will peru maximum utilization of the avrca by normal air traffic. Unauthorized entrv into the danger arca surrounding Johnston Island by U. S. citizens and all other persons svbjc to the jurisdiction of the United States is prohibited beginr July 25, 1958. ( "ESOSTORY BEST COPY AVAILABLE ' 4 aL COLLECTION ee BOX No, G2 ON 3. 326 -§ 3-6, rowen Modid vy