◆ SpookStack

CPmONAL FMM HO, 18 UNITED STATES GO' , Memorandum , R ur. cones $Y DATE: June 29, 1962 R. H. Jevons 3th supject, —ALCOS You were advised in my memorandum of Jun ry 62, that the San Francisco Office had submitted a sample of materia : removed from holes located by prison officials in the cell of : a an Alcatraz inmate; also, known samples of paint and cement paint were submitted for comparison purposes, The examination of the material from the hole discloses it to be essentially a neat (no sand) Portland cement with traces of mortar and paint particles, The cement has been in contact with moisture but is not believed to have been made into a slurry. The length of time the material was in use could not be determined. The material from the hole is different from the white cement paint submitted, Further examinations of the cement and paint are being made and you will be kept advised of any pertinent developments. These results are being furnished the San Francisco Office by teletype today. ACTION: For information. 76-26295 by - Mr. Belmont - Mr. Mohr - Mr. DeLoach ~ Mr. Rosen - Mr. Trotter - Mr. Evans et et at Remy A262 18 JUL 952 5 & JUL 13 1902 Lee i —