The British Mission to Japan, and

The Joint Atomic Bomb Investigating Group (Medical). and particularly to
the following individuals:

Col. Stafford L. Warren, Medical Corps, United States Army, for his
evaluation of medical data,

Capt. Henry L. Barnett, Medical Corps, United States Army, for his
evaluation of medical data,

Dr. R. Serber, for his comments on flash burn,

Dr. Hans Bethe, Cornell University, for his information of the nature of
atomic explosions,

Majors Noland Varley and Walter C. Youngs, Corps of Engineers, United
States Army, for their evaluation of physical damage to structures,

J. 0. Hirschfelder, J. L. Magee, M. Hull, and S. T. Cohen, of the Los
Alamos Laboratory, for their data on nuclear explosions,

Lieut. Col. David B. Parker, Corps of Engineers, United States Army, for
editing this report.



INTRODUCTION