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TOP SECRET ~ RESTRICTED DATA
CONCLUSIONS OF THE AD HOC WORKING GROUP
ON THE TECHNICAL FEASIBILITY OF A
Se
CESSATION OF NUCLEAR TESTING
In response to the action taken by the National Security Council
meeting on January 6, 1958, a technical panel of the President's Science
Advisory Committee, the Department of Defense, the Atomic Energy
Commission, and the Central Intelligence Agency has made a study of
the technical factors affecting an international agreement for the cessation of nuclear tests.1/
The following conclusions have been reached:
A. Capabilities of the Present U. S. Long Range Detection System
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Since the present systern was designed to detect tests conducted
in the USSR, its capabilities for tests outside the USSR are limited.
Nuclear tests as large as a few hundred kilotons and possibly even one
megaton might be missed if conducted |in areas remote from the present
detection network.
l/ A complete transcript of the proceedings of the Working Group has
been deposited with the Office of the Special Assistant to the President
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