25 April. Recovery was begun on 27 April with mines closest to g#ound zero, but then switched to outer strings because of high radiatio levels (10 R/hr). The inner string was left for several days. Mines were recovered by the Reclaimer, washed down as necessary to redu radioactivity, and then transferred to the Terrell County. Figur 47 shows such a recovery. Shots: UNION (Bikini). Radiation Exposure Potential: High for personnel involved in cecchery operations. Staffing: No personnel from TG 7.1 were specifically associated wh this project. Exposures for personnel from other naval task group units are presented in Table 59. Project Report: Reference 62. Project 3.5 -- Blast Effects on Miscellaneous Structures Agency: Armed Forces Special Weapons Project (AFSWP) Operations: Survey of accidental damage to base camp structures o Eneman and Aerokoj, airfield facilities on Aerokojlol, and concret instrument shelters on Bokbata and Nam following BRAVO. Shots: BRAVO (Bikini). Radiation Exposure Potential: Potential exposure present for any rf sonnel involved in damage surveys. Staffing: project. One military person from AFSWP was associated with this He received 1.000 R, although this was probably not accru d solely in the Project 3.5 effort. Project Report: Reference 63. Response of Humans to Accidental Fallout Radiation (Program 4) Immediately after the accidental exposure of the Marshall Islanders Rongelap, Ailinginae, and Utirik, and the 28 task force personnel on Ro gerik following BRAVO (see Chapter 4), Project 4.1 was organized. 186 The