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REPORT 7-b of the B- LABORATORY FEDERAL BUREAU OF INVESTIGATION WASHINGTON, D. C.2O535 December 18, 1978 To: SAC, San Juan (89-123) FBIFILE NO. 39-4286 LAB.NO. 81204066 S TH Re: RYMUR Specimens received December .4, 1978 Q40-Q41 Two metal fragments Result of examination: Specimen Q40 is a metal fragment which bears. no observable bullet characteristics or microscopic marks of value for comparison with a suspect weapon. Specimen Q4l is a bullet jacket fragment which. is too minute to determine caliber or manufacturer. The partial rifling impressions remaining in Q4l would tend to indicate that Q4l was fired from the barrel of a. weapon with right twist rifling. The microscopic marks remaining in Q4l are not sufficient for identification *pspodpnd Specimens Q40 and Q4l are being returned to the San Juan Division under separate cover by registered. mail. WA: 8