Table 11 Residual Beta Burns Subject No. Sex Age Description 7 F 10 24 F 20) 26 M 19 39 F 21 Slight scarring and pigmentation on left antecubital fossa. Mottled spots of pigmentation and depigmentation on dorsum offeet. Marked pink-colored depigmented scars on dorsum of right foot. parucularly between ist and 2nd toes. Skin tight in scarred areas — bound to subcutaneoustissues. Considerable pigment variation and hyperkeratosis on back of neck. Pigmented macular areas on left antecubital fossa and dorsum of feet. 49 F 22 ay F 41. 63 F 43 67 F 21. 78 F 43 79 M 46 Figure 33.Pigmentedlesions in area of beta burn (Subject +78). A few adults were also examined andtreated. As noted in the past, people of age >40 showa considerable amountof periodontoclasia. A few cases of arrested enamel development involving the occlusal surface of molar teeth were noted, probably due to faulty nutrition during the formative period of the teeth. No significant differences were found between the Rongelap children and children of the same age group on outlyingislandsin caries rate, eruption time, or morphology of the teeth. It wasestimated that only about 10% of the Rongelap adults practiced good oral hygiene. Laboratory Examinations HEMATOLOGICAL Summary tables of the hematological data are presented in tables and graphsin the text, and the Pigmented maculae (freckle-like) on necklace area of neck, particularly on right side. Increasing in number? Mottled hyperkeratosis and pigment variation on back of neck. Considerable pigment variation on back of neck and to a slight degree on right forearm. Not seen this survey. Previously showed atrophy and scarring on dorsum of feet. Pigment variation and hyperkera- tosis on back of neck. Raised pigmented mole-like lesions on sides of neck, particularly on left side. Appear to be increasing in number (see Figure 33). White nodular scar and generalized scarring and pigment variation on back ofleft ear. Area of spotty alopecia on lower occipital region of head. raw data on all individuals are presented in the appendices. The more heavily exposed Rongelap group, who received 175 r, are designated as Rongelap exposed,” the Rongelap people who received a smaller exposure of 69 r as ‘ Ailingnae exposed,” and the larger unexposed comparison population of Rongelap as “unexposed.” Because of the small number of people in the Ailingnae group (13 examined of 18), their data were not treated as fully as those for the larger groups. and are briefly summarized below in a separate para-