TASK UNIT 2 -- PRODUCTION. This unit produced special materials for use in the nuclear devices of both TU 1 and TU 12 worked at Parry. TU 2 Its personnel were from an AEC contract organization, Herrick L. Johnston, April. (UCRL Program). Inc., of Columbus, Ohio. This group left the PPG in TU 2 personnel totaled about 45. TASK UNIT 3 -- SPECIAL MATERIALS AND FACILITIES. The mission of this unit was the handling and delivery of the special materials produced by TU 2 to the users in TU 4 (LASL Assembly) and TU 14 (UCRL Assembly). Like TU 2, this unit was composed of employees of an AEC contractor, the Cambridge Corporation of Denver, Colorado. April. This group also left the PPG in TU 3 personnel totaled about 60. TASK UNIT 4 -- LASL ASSEMBLY. This unit was composed of LASL person- nel and personnel from its contractor, American Car and Foundry, Inc. (ACF). The LASL-designed devices were actually assembled by ACF except for the NECTAR device, which was fabricated at LASL. primarily at Parry. This unit worked TU 4 personnel totaled about 75. TASK UNIT 6 -- FIRING PARTY. TU 6 armed and fired the devices. Its work involved checking the various electromechanical links that prevented premature device detonation and removing them just before activating the firing mechanism. All the Bikini devices were detonated by signals sent over a wire system from the bunker at Station 70 on Eneu, which was manned by TU 6 for BRAVO, but the remaining Bikini tests were initiated by a radio signal from the USS Estes to the evacuated bunker. NECTAR, was wire-detonated from Parry. The test at Enewetak, The single person identified with TU 6 was from LASL. TASK UNIT 7 -- RADIOLOGICAL SAFETY. This unit was made up of Army personnel from the lst Radiological Safety Support Unit (RSSU) from Ft. McClellan, Alabama, commanded by a military officer from LASL, and was supplemented by personnel from DOD and AEC agencies. TU 7 are described in Chapter 2. The activities of TU 7 personnel numbered about 54. 56