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FEDERLL SUREAU OF NE PRE run U.S. DEPARTMENT OF JUSTICE COMMUNICATIONS SECTION 962 PE baz 6-25-62 3-16 PM PDST VEG TO’DIRECTOR, FBI /76-26295/ FROM SAC, SAN FRANCISCO /76-2887/1 PAGE ATTENTION FBI LABORATORY... ‘Los ‘ , RE SAN FRANCISCO LETTER JUNE TVENTYTWO, SIXTYTWO, WHIRH TRANS- MITTED TO FBI LABORATORY MATERIAL BELIEVED CEMENT PAINT WHICH WASjo DUG OUT OF HOLES IN CELL OF na Te este MAKING SUCH HOLES AND SAID THAT THEY MUST HAVE BEEN MADE’ BY SOMEONE PRIOR TO TIME HE WAS ASSIGNED TO CELL ON SEPTEMBER TEN, SIXTYONE. DETERMINED FROM ALCATRAZ RECORDS THAT CEMENT PAINT NOT PURCHASED FOR OR USED IN CELL BLOCK UNTIL OCTOBER, SIXTYONE. KNOWN QUANTITIES OF CEMENT PAINT AND PAINT BEING FORWARDED FOR COMPARISON WITH OTHER MATERIALS. END AND ACK PLS. 7 3 WA-ES-WORD-EIGHT_OF-FIRST-T ES SwICN iRECS 7h- 262.237 70 YES Whe 8 JUL 5 1962 6-17 PM OK FBI WA RAC. co — ® 4 JUE #24982. S75