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os erties S85 scussing scrapes of taba preseryees . a similar in shape to Q3 through with the. tien “Youe-ty99 te riding » high, toree eut of weter.” The article states, ——" teat the . yoke type preserver makes primeing aiftionls, _ Bpecinen KB (Sperts Nisstrates, wah a, ‘yses) ta dtecessing various inflatables, life preeservera, teys, states that “The composition of most inflatables.......is either vinyl plastic or rubberised fabric: Rubberized fabtic.tacdurable w more difficult to punotare than vinyl." . process, Neither the material aor process was : constrecting Q3 throagh Q7... ran ” cat : Tae life preservers were were tested for their ‘ababaty to’, retain air. They were inflated until firm, and then weights \ ‘were placed en them. It was necessary f firks te seal punctures in Q5. BSpeciner Katies ozvernne te be conpleteiy at airtight, | \ veuaining firm for severs] hours, . Specimens Q4 and Q65 los goat of their air in abdout an hour. Bowever, the rate aid : deflatian was slew, and pressure could ne doubt be maintained by mouthy. B yar ee, _ ee t Yr: 4 s . of binia origin. : The dunsy faces were “examined ‘for the pressnce oot. beistiee similar to those composing the K7 brush, but sone. Page 2 PC-70654 GH (continued on next page) ay)