PREFACE
Operation Castle must be reported as the nightmare of radiological-safety test operations.
The extended nature of the operation in the presence of high-level contamination in the Bikini
area of the Pacific Proving Grounds, the completely shipborne operation some distance from a
supply base, the decentralized systein of operational control, instrument-humidity difficulties,
morale problems, and poor communications tend to make this documentation an excellent guide
or source of information to personnel who may be detailed or ordered to organize or work with
a similar organization in possible future operations of this nature.
This report cannot be rightly attributed to any one individual since it resulted from the
wholehearted cooperation and efforts of all the personnel in the unit. Their work under extremely difficult working and housing conditions is to be commended.