Shimizu, 1945, proves neutron rays at Hiroshima

From ““Historical Sketch of the
Scientific Field Survey in Hiroshima Several Days after the Bombing” by Prof Sakae Shimizu, 1982, published by Bulletin of the Institute for Chemical Research, Kyoto University, Volume 60, (2), 1982.

(pages 46 – 50 of the Bulletin)

The radiometric results obtained from the samples obtained from Hiroshima are
presented in tabulated form on page 47 of the Bulletin. The headings of the Table are: Type of Sample, ID number of sample, Element, Beta activity in counts per minute, Half life – Measured and Known, Measured max energy (MeV) (Millions of Electron Volts) Location of sample, Distance from Hypocentre (m), Quantity of measured sample (g) .

13 samples are listed in this table. The bone of a horse taken from zero metres from
hypocentre gave a Beta emission reading of 529 cpm. An iron magnet taken 500 metres
from the hypocentre gave a Beta emission reading of 374 cpm.
Half lives ranged from hours to 18 days (horse bone).
Shimizu explains these results in detail. Of the horse bone Shimizu states it gave “an extraordinarily strong activity of 637 cpm per gram (.89 of a gram being obtained and measured). Shimizu attributes this as being due the action of neutron bombardment upon bone tissue, resulting in the activation product radio active Phosphorous 32 and to a lesser extent radio calcium.

Shimizu’s original papers and specimens from August – September 1945 were confiscated under orders of General Farrell. They were taken to the USA, where they remain. Last I heard they were uncatalogued within the Library of Congress.

Professor K Misonou (Army Medical School), Institute of Physical and
Chemical Research: Hidehiko Tamaki, Koichi Muraji, Motoharu Kimura, which
arrived in Hiroshima on 14 August 1945. This team worked from the Hiroshima
Ninoshima Quarantine Station, and measured induced radiation in human bone at the Western Drill Ground, the Hiroshima Red Cross Hospital and other locations. This team published a report entitled “Interim Report on the Atomic Bombing by the Survey Team of the Institute of Physical and Chemical Research”.

Given these two 1945 Japanese survey results which both confirm induced radioactivity in human bone, I find it very to understand why it is that some modern scientists have maintained, as recently as 1992, that neutron activation products where not a factor in Hiroshima.

The Hiroshima Doctors’ accounts, given to Hersey and published in the book “Hiroshima”, 1946, confirm that the medical staff at Hiroshima in 1945 suspected that radio phosphorous induction in human via radiation from the atomic bomb was an important contributor to the illnesses and death suffered by the target population of civilians. The diagnosis of leucopenia in bomb victims by those doctors was confirmed by US Forces under General Farrell.

This is the same condition Lawrence, Erf and Pecher reported as a limit to dose in the pre- war use of Phosphorous 32 by those experimental medical researchers in the treatment of leukemia and other conditions. (Brucer.)

Further, the finding of Cobalt 60 in steel structures of Hiroshima and attributed to activation via radiation from the Hiroshima has been reported as follows:

Health Phys. 2012 Apr;102(4):400-9.
Measurements of (60)Co in massive steel samples exposed to the Hiroshima atomic bomb explosion.
Gasparro J, Hult M, Marissens G, Hoshi M, Tanaka K, Endo S, Laubenstein M, Dombrowski H, Arnold D.

European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, EC-JRC-IRMM, Retieseweg 111, 2440 Geel, Belgium.

To study discrepancies in retrospective Hiroshima dosimetry, the specific activity of (60)Co in 16 steel samples from Hiroshima was measured using gamma-ray spectrometry in underground laboratories. There is general agreement between these new activity measurements and the specific activities derived from previously calculated dose values on the one hand and former measurements of samples gathered at distances less than 1,000 m from the center of the explosion ( 1,300 m slant range) were mainly cosmogenically induced. Furthermore, at long range, these results are in disagreement with older measurements whose specific activity values were 10 to 100 times higher than predicted by computer model calculations in DS86 and DS02. As a consequence, the previously reported discrepancy is not confirmed.

PMID: 22378201
end quote.

It is about time the United States returned Shimzu’s August – September 1945 Hiroshima survey data and samples to Japan.

It might help end the apparent confusion on the part of modern experts. If the patients and doctors in Hiroshima could figure it out, why are modern people denied the ability?

The relative contributions of the two types of ionising radiation emitted at bomb burst to the health effects suffered by the people in Hiroshima at the time is important information. Without it the effectiveness of the two types remains fogged by the considerations of war.

Scope 4 was issued by Compton to the Manhattan Project’s Health Division in 1943. The Scope ordered that the section find the “radiations needed to be effective against the enemy.” Stone, head of the Health Division, had been the first medical researcher to use neutron radiation in the treatment of disease (1938). He was forced to stop due to “distressing late effects”. His patients suffered horrific deaths.

The human LD 50 for Phosphorous 32 (calculated from animal data) was given to the Manhattan Project by Lawrence in 1942. (Brucer.)

If the Manhattan Project had no interest in, or knowledge of, neutron activation products, why receive the human LD50 for the neutron activation product P32?

The people of Hiroshima and Nagasaki were not guinea pigs. They were targets.

The fuel for the Nagasaki bomb was manufactured in a prototypical early fission reactor which used pure uranium of natural isotopic mix as its fuel. It is not difficult to obtain.

Tell me the means to build a plutonium bomb is beyond the compliant nuclear powers. I find I cannot believe that. As soon as a nuclear nation has reason to be non-compliant, it can build a plutonium bomb.

What will be the reason for the next unleashing of such a weapon against a city and a nation?

“Admiral Leahy was the Chief of Staff to Presidents Franklin Roosevelt and Harry Truman and the unofficial coordinator of the Joint Chiefs of Staff. A close advisor to both presidents, he thought a Japanese surrender could be arranged without use of the atomic bomb and without an invasion of the Japanese mainland. He felt that demands for unconditional surrender would only encourage Japan to fight on and cost American lives.

He was a staunch anti-communist and did not like the idea of having Russia enter the Pacific War, which could give the Russians more post-war control of Pacific territory.

Leahy believed the atomic bomb would probably not work. After the atomic bombings of Japan, Leahy condemned the use of the atomic bomb for practical reasons:

“It is my opinion that the use of this barbarous weapon at Hiroshima and Nagasaki was of no material assistance in our war against Japan. The Japanese were already defeated and ready to surrender because of the effective sea blockade and the successful bombing with conventional weapons.” (William D. Leahy, I Was There, pg. 441).

And on Aug. 8, 1945 he wrote in his diary:

“there is a certainty that it [the a-bomb] will in the future be developed by potential enemies and that it will probably be used against us.”

He also objected to the a-bomb’s use for moral reasons:

“in being the first to use it, we had adopted an ethical standard common to the barbarians of the Dark Ages” (William D. Leahy, I Was There, pg. 441).”

One Response to “Shimizu, 1945, proves neutron rays at Hiroshima”

  1. CaptD Says:

    Also left unsaid above is that the US Army took all records from the Japanese after the end of the War and classified them top secret with many never seeing the light of day again…

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