Contractors to Department of Defense (DOD) organizations werg sented in TG 7.1 and are listed below. Exposures are presented repregor these in Table 90. Allied Research Associates, Boston, Massachusetts. Seven civiliams from this group provided thermal measurement instrumentation for e air- craft effects experiments, Projects 6.2a and 6.2b, were listad in the TG 7.1 Consolidated List. Four received exposures; all were Ress than 0.5 R. Cook Research Laboratories, Chicago, Illinois. A 9-man civilian Fontingent installed and maintained thermal instrumentation on the B-47 hhircraft of Project 6.2b. Duke University, Durham, North Carolina. One individual from Duk> badged with TG 7.1, but his function has not been determined.] was He received an exposure of less than 0.5 R. Raydist Navigation Corporation, Norfolk, Virginia. Three civiliag&s pro- vided navigational:aid service for test aircraft in the Bikin} area as part of Project 6.1. Raydist personnel also assisted informa]ly in Project 3.2. Scripps Institution of Oceanography, La Jolla, California. took part in Projects 1.6, 2.7, and 2.7a. Nine qivilians Both sets of projedts had high potential risks at times of data recovery and sample colJection. The highest exposure recorded was in the 4~ to 5-R range for e participant. Stanford Research Institute, Menlo Park, California. Ten civilia con- cerned with airblast and crater measurement participated in Prpjects 3.1 and 3.2. Texas Instruments, Dallas, Texas. One civilian was apparently badged with TG 7.1, but no reading was recorded. for this person. 406 No function has been identified