4. TIISI handlhig of ory@o material, including transfers, destruction,reports, compromises repairs, and any correspondence Pertainingto crypto material was to be in accordancewith tie Registered PublicationManual. 5. A chart showing the distributionof cryptographicmaterial for Operations “Sandstonen is contoined in Annex Fox (Communioations and Electronics Plan) of Field Order !hnmberone, Joint Wsk Foroe Seven as page F-IV-Tab 1. CALL SI(2US , ROUTING INDICATORSAND DELIVERY GROUPS All oall signs, routi.ngindicators and delivery groups for Naval units were obtained from currently offective “JAKAP” publications. Cell signs for special elenmsts created for this project and operating under Havs1 oontrol were covered by assignments from the spare blocks in the appropriateJAMAP publicationsand so authorizedby CI?Oand CIliCPACFLT. TESTS AND OPERATIONS It had been planned that the additional and speoial ccmmnioations equipmmt instailed on the MT. MCKINLEY, ATSEMARLE, “CURTISSand BAIROKO would be 06mpletelyinetalled and ready for limited operational tests by 15 February 1948. Due to installationand logistios problems, it waa not until 23 February that the equipment was ready for testing. During the testing period, it was neoessary to observe radio silence during certain hours and in some instances, to employ dunsnyantennae so as not to interferewith domestia communication 98 Section XI .. $mnm-