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29 March 1955 MEMORANDUM FOR: Chiefy TSS/Chsmical Division SUBJECT Security Approval - 1. Please bo advised that a jMffjlfffi security approval is hereby granted on the following named individuals to permit their use in conducting scientific" research and tests : as directed by personnel of TSS/Cheraical Division. They vill have access to TOP SECRET information. 2, lour attention is called to the fact that security clearance does^i^t constitute comple te cornel lance with' the provisions of Therefore, if you should desire at a later date to. change the status or use of these individuals, a request for clearance to cover any proposed charge should bo submitted to this office. 3, Thip clearance becomes invalid ir the event the. Subject* s services are not utilized ’vitbin 60 days of the date of this memorandum. "Security Operation^ Officer DD/P/TSS Distributions addressee - orig.