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fi —, . oo, ‘ OPTIONAL FORK NO. 19 a : . 47 Boi . 7 , ~b* UNITED STATES GovEY MENT r) “Memorandum a _. TO: DIRECTOR, FBI (76~26295) pate: 6/22/62 | ATTN: FBI LABORATORY FROM. : SAC, SAN FRANCISCO (76-2887) (P) ) 3 G- 2S 624) “OPY & SPECIMENS RETAINED IN LAB FOR LAB ACTION & REPORT 4 SUBJECT: atcos LRANK LEE MoRRIS ao 7 ay | e Vic of the ventilator grill in his cell. These holes were located by prison officials after carefully probing for them, since meticulously camouflaged them. Alcatraz Penitentiary offic material out of one of the holes in coll. to be cement p. e This material is believed It 1s noted that a... assigned to this cell on 9/10/61, and he denies malcing the holes, -elaiming they were probably made before he was assigned +8. this cell. Nie t on ascertained that spect me 2 Alcatraz inmate, had dug some ¢ t ae The FBI Laboratory is requested, if posible, to b ascertain the length of period that the enclosed cement 7 paint-appearing substance was in use. It is reported that r ordinarily a small amount of water is placed with the cement ie! paint mixture and the possibility exists that the substance i which is attached would have gone through a chémical reaction [ \ to the added water and t indicate the length of time that ' this material was used by The FBI Laboratory is also requested to furnish an analysis of the material submitted. SUBJECTS AT LARGE ARE ALL CONVICTED BANK RO AND SHCULD C3)- Bureau (Enel. 1)(ATRMATL) (REGISTERED) 2 - meee “4 ee ae gr 2 10 < ab * é IS YO. EX-L? 5 JUN 28% 062 i)