decontamination center at Kwajalein was completed and adequate stocks of work clothing obtained. project was completed. The high altitude instrument calibration By 13 April preparations for X-ray Day were complete and the unit stood by awaiting implementation of the operation. X-RAY TEST This test was carried out in exactly the same manner and on the same time schedule as the rehearsal. Installation of drone aircraft film badges was completed at Eniwetok by 2300 hours of X-ray minus one. Aircraft were on stations at H hour and prepared for the detonations with two exceptions; the B-17 spotter aircraft which had returned to Kwajalein with a defective weather reconnaissance aircraft and the 14,000' drone aircraft which went out of contro] at H-2 minutes and crashed. Following the detonation all other aircraft proceeded to carry out their assigned missions without incident and without encountering appreciable radioactivity. The drone aircraft were landed at Eniwetok and all other aircraft returned to Kwajalein. . The period following X-ray Day was a very busy one. | Cloud tracker missions were flow until plus five day and the aircraft used for these missions always returned with exterior contamination thereby necessitating monitoring and personne] decontamination operations. Capt Matthews and five additional monitors returned to Eniwetok on plus one day to supervise drone aircraft decontamination operations and compile data. Two monitors were sent to Guam to handle a problem which arose there in connection with weather reconnaissance aircraft contamination. Additional operations in this period consisted of post X-ray Day Section IX 102

Select target paragraph3