I’ve been told this book by John Hershey is the most famous of the many books describing the atomic bombing of Hiroshima. My first reaction was to be astonished that it was so small. I won’t be so foolish to dismiss the importance of a book that has over 400 Amazon reviews with an average of more than 4 out of five “stars,” but I expected more. Perhaps I’ve read too many books that describe the horrific effects of a nuclear weapon detonation over a city. My purpose for finally reading it was to look for new information for the book I’m writing that has the working title of “Nuclear Deterrence: An Early History of The Rocky Flats Plant.” That history obviously includes the nuclear bombing of Hiroshima and Nagasaki. Any history of the impact of nuclear weapons on deterrence would obviously be deficient without a discussion of the first use of nuclear weapons in war.

The book describes the situations of six residents of Hiroshima when the nuclear bomb was detonated over Hiroshima on August 6, 1945. The six are described as a clerk who was chatting with a coworker, a physician who had sat down to read a newspaper, a tailor’s widow who was watching a neighbor, a German priest who was reading a magazine, a surgeon who was carrying a blood sample to a laboratory, and a Methodist pastor who was unloading a cart of clothes. The first observation is that they all had, for one reason or another, turned their heads away from the location of the detonation or were a few feet beyond a window that faced the detonation. Those small accidents of history saved all of them from having their eyes destroyed. There is a description of how a contingent of Japanese soldiers was outside and all had looked up to see the single B-29 when the detonation occurred. All of them had their “eyes melted.” Continue reading →

This report, written by Henry DeWolf Smyth at the request of Major General L.R. Groves (who led the Manhattan Project), is better known the “Smyth Report.” The copyright announcement by Smyth is interesting. “Reproduction in whole or in part authorized and permitted.” Groves wrote in the Foreword that “…there is no reason why the administrative history of the Atomic Bomb Project and the basic scientific knowledge on which the several developments were based should not be available to the general public.” There also are blunt warnings against requesting or releasing additional information “…subject to severe penalties under the Espionage Act.” Smyth explains in the Preface that “The ultimate responsibility for our nation’s policy rests on its citizens and they can discharge such responsibilities wisely only if they are informed.” He explains that the report is written about the construction of atomic bombs for “…engineers and scientific men who can understand such things and who can explain the potentialities of atomic bombs to their fellow citizens.” The book gives a tutorial on the history of research on atomic structure and radioactivity and the basics of nuclear physics.

The administrative history of the research has been well-documented in many sources, but many of them probably used the information in this book. One issue that was considered in depth early on was the need for secrecy about the research that was being considered or was on-going.  A “Reference Committee” was established in the National Research Council “…to control publication policy in all fields of possible military interest.” Journal editors would send copies of papers to the committee for review. The system worked well. Most physicists were soon absorbed into the various projects, “…which reduced papers being submitted to the committee almost to the vanishing point.” The arrangement was voluntary, but scientists in the country cooperated.  Scientists in Germany, the Soviet Union, and other countries recognized that the United States was attempting to develop atomic energy for a weapon based on the sudden absence of research papers being published by scientists in the U.S.

One piece of information that disagrees with many other sources is that Harry Truman was well aware of the project and its magnitude when he was a Senator. He was briefed by Stimson and Groves on the project immediately after FDR’s death and his inauguration, and he kept “…in constant touch with the program.” Continue reading →