operate satisfactorily, dLx For 4 more detailed discussion of Program 6,0, see Appen- yet . 13. PROGRAM_7,0 - LONG RANGE DETECTION the world wide Operation GREENHOUSE provided an opportunityfor testing and alse permitted detection net operated by Headquarters, United States Air Foree, ting atomic the gathering of much additional data which will be employed in evalua explosions produced by foreign powers. By collection of bomb debris in air and s, measurcground filters, measurement of atmospheric shock wayos by acoustic device ment of shock waves in the earth's crust by seismic instruments, and detection of borib debris by atmospheric conductivity apparatus installed in aircraft, any suspected atomic explosion is capable of verification and, within Limits, description as to location and yield. Because many of the Air Force detection installations are lo- cated in remote parts of the world, complete informition from the world wide net concerning Operation GREENHOUSE has not yet beon correlated, be drawn, however, on the information available. Sone conclusions can Collection of samples of bomb de- bris was highly sucecssful and preliminary results are gratifying. Acoustic signals from all shots were identified at a distance of 2,500 naubical miles east and west of ENIWSTOK. Seismic installations detectcd all explosions at great distances, the greatest being 5,200 nautical miles on two shats., Hach shot was also detected by Sound, Finding and Ranging (SOFAR) equipment at Point Sur, California. By Joint Chiefs of Staff decision, the Commander, Joint Task Force THREE was only rcsponsible for activities within the MARSHALL ISLANDS area. Headquarters, USAF (AFOAT-1) shoul: be consulted for further discussion of this program, 14. PROGRAM 8.0 — BLAST EFFECT ON ATRORAFT This program was primarily concerned with pressure, gust end touperature effects of an atomic explosion on aircraft in flight and on aircraft components on the ground. In addition, several specialiacd projects related to air operations and blast were carricd on under this program, a, BLAST EFFECT ON ATRCRAFT Structural damage, verying from negligible to fairly severe, occurred on T~33 and B-l7 drone airplanes, On "HASY" shot, one (1) 17-33 drone went out of control shortly after arrival of the shock wave and crashed in the ocean. No data wore obtained in this case since the telometoring system was inoperative throughout all tests, Some heat effects were noted on the drone aircraft, such as scorched paint and a burned tire. The crews of manned sircraft noted some,