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21 March 1955 MEMORANDUM FOR; Chief, TSS/Chemical Division r SUBJECT Security Approvals - 1 1, Please bo advised that aitSMdl security approval is hereby granted on the following named individuals to permit their use in conducting scientific research and teste as directed by personnel of TS3/Chemical Division. They will have access to TOP SECRET information. : 2, Your attention is called to thelfactlthat a security clearance does not- constitute complete compliance with the provisions of Therefore^ if you should // desire at a later date to change the status or use of those individuals, a request for clearance to cover any proposed change should bo submitted to this office, _ — 3. This clearance -becomes invalid in the event the Subject's services are not utilized within 60 days of the date of this memorandum. dd/p/tss Officer Distribution: addressee - orig, A :i-