This document consists of 75 pages,
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» WI-929.
OPERATION CASTLE—PROJECT 6.6
Report to the Scientific
Director
EFFECTS OF NUCLEAR DETONATIONS
ON THE IONOSPHERE
Fred B. Daniels
Arthur K, Harris
Evans Signal Laboratory
Signal Corps Engineering Laboratories
Fort Monmouth, New Jersey
APRIL 1957 —
U. S. MILITARY AGENCIES MAY COTIIN O°PI=S CF THIS REPORT DIRECTLY @ 1"!
FROM DDC.
OTHER QUALIFIED USLRS Swinuk REQUEST THROUGH _‘5
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Defense Ltomic Surport Avency
‘Washington, Dd. C. 20501
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