Project 2.6a ~- Chemical, Physical, and Radiochemical Characteristics of the Contaminant Agency: Naval Radiological Defense Laboratory (NRDL) Operations: Analysis of samples provided by Projects 2.5a and 6.4, with laboratory operations at NRDL and probably Parry. Shots: All. Radiation Exposure Potential: Likely for any personnel involved in field work and perhaps some potential for those performing analysis later. Staffing: Fifteen were associated with this project, but exposures are not given for one civilian and one military. others (13 civilians from NRDL) Project Report: Exposures for the are given in Table 19. Reference 55. Project 2.6b -- Radiochemical Analysis of Fallout Agency: Army Chemical Center Operations: (ACC) Samplers on eight islands at Bikini Atoll, two islands at Enewetak Atoll, Unibor in the Enewetak Lagoon, and on a barge collected data for analysis in the laboratory trailer at Parry. Much of this was done by Project 2.5b personnel who normally employed helicopters. Shots: BRAVO, ROMEO, KOON, UNION (Bikini); NECTAR (Enewetak). Radiation Exposure Potential: High during recovery operations; moder- ate during analysis. Staffing: Six were associated with this project, three civilians and three military, all from ACC. Project Report: Reference 56. Project 2.7 -- Distribution of Radioactive Fallout by Survey and Analysis of Contaminated Sea Water Agencies: Scripps Institution of Oceanography (SIO) Naval Radiological Defense Laboratory (NRDL) 182