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as a medium for very quick reporting of important scientific or technological developments, primarily for the high level policy maker.
This type of publication has been in existence in the Office of Scientific Intelligence for many years under a variety of titles. Informal memoranda apparently served the purpose until 1954, when the Scientific Intelligence Memorandum (SIM) became a current intelligence publication medium. (Prior to 1954, the SIM was a short report but was not necessarily a current publication.)
One
of the first was the reporting of the first Soviet surface-to-air missile launch sites. After several years the SIM lost its role as a medium for current publication and became in essence an unscheduled Scientific Intelligence Report. Thus, for several years, the Office had no specific mechanism for current publication and the SID and the OCI publications
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