Hey xylstra,
re the "documentary" you reference above, I am sorry but it is largely junk. Did you notice that none of the Japanese interviewed said that their nuclear program managed to make an A-bomb? That none of them said that they had enriched enough U-235 to make an A-bomb, or were even close to having enough to make an A-bomb? The only people saying things like that were the so-called American experts-investigators-historians-interviewers-reporters.
Also, the storyline reminds me of the same storyline used to explain why the Germans were actually much further ahead than anyone not in the know knows due to obfuscation by the American (and presumably British/French/Dutch/Belgian/Norwegian/Russian/. . .) government, and that they had managed to set off at least one atomic bomb somewhere in the area of western Russia that only those in the know know about. And that the only reason the US was able to do what it did
when it did was due to capturing German technology (ie Little Boy, see this thread: "
German Aircraft that could deliver The Bomb" particularly the last half, including things like this: "
German Aircraft that could deliver The Bomb" and this "
German Aircraft that could deliver The Bomb".
It is also the same pattern of storyline that is used in many disinformation campaigns.
In addition, there are almost as many speculations/variations of what type of Uranium was transported by U-234, and what it was contained in, and where in the sub it was carried, as there are authors - most of whom state in no uncertain terms which are the correct type/container/location.
"Among the three hundred ton cargo . . . and ten canisters containing 560 kg (1,235 lbs.) of uranium oxide (U235). The uranium oxide was to be used by the Japanese as a catalyst for the production of synthetic methanol used for aviation fuel." (Scalia)
and
"That the ship carried 1,200 pounds (540 kg) of uranium oxide remained classified for the duration of the Cold War. Author and historian Joseph M. Scalia claimed to have found a formerly secret cable at Portsmouth Navy Yard which stated that the uranium oxide had been stored in gold-lined cylinders rather than cubes as reported by Hirschfeld.
and
"According to the book "Hirschfeld: The Secret Diary of a U-boat" by Brooks, Hirschfeld apparently stood on the bridge watching two Japanese senior officers on their hands and knees on the foredeck yet was able to see them writing "U-235" on ten 9-inch square containers that were then put into one of the submarine's vertical mine shaft containers. . . nor was it ever in any of the vertical bow containers; it was in fact stored in containers located in horizontal compartments on either side of the U-boat." (Note that the U235 information is not taken directly from the diary, but is included in the last 2 chapters of the book, based on statements Brooks claims Hirschfeld made during verbal interviews)
and
". . . the surrender of submarine U-234 and its cargo of enriched uranium and infrared fuses allowed the Manhattan Project to complete and drop its bombs on Japan in time to meet an important mid-August 1945 deadline for war planners. "Without the surrender of U-234 we would not have been able to make the uranium bomb that was dropped on Hiroshima or the plutonium bomb that was dropped on Nagasaki, and would probably not have had a bomb of our own until late 1945 or early 1946." Hydrick in "Critical Mass: How Nazi Germany Surrendered Enriched Uranium for the United States' Atomic Bomb". Hydrick also presents evidence that indicates infrared fuses found on the German submarine were used to fix problems the project scientists were having with the triggering mechanism for the plutonium bomb dropped on Nagasaki.
and
A declassified transcript of a secret telephone conversation held at the end of May 1945 at Portsmouth NH involves the discussion of the destination for assay of 80 cases of "U-powder" unloaded from U-234. "U-powder" is natural uranium powder. U-234 radio operator Wolfgang Hirschfeld reported seeing "more than 50" lead cases about the size of a car battery and wrapped in brown paper stenciled "U-235" (uranium) being loaded aboard U-234 at Kiel. Unenriched uranium powder would not require to be packed in small lead containers for biological shielding. These 80 cases do not feature on the USN Unloading List. The German Loading Manifest has never been released. (Gunson)
and
". . . and apparently successfully test blasted a bomb near Hungnam in Korea two days after Hiroshima." (Gunson)
and
". . . within four days personnel from the Office of Naval Intelligence had brought U-234's second watch officer, Karl Pfaff - who had not been brought to Washington with the original batch of high-level prisoners, but who had overseen loading of the U-boat in Germany - to Washington and interrogated him. They quickly radioed Portsmouth:
Pfaff prepared manifest list and knows kind documents and
cargo in each tube. Pfaff states...uranium oxide loaded in
gold cylinders and as long as cylinders not opened can be
handled like crude TNT. These containers should not be
opened as substance will become sensitive and dangerous
and on and on and on . . .
In addition, the information that Japan was doing nuclear research (including for both reactors and weapons) was common knowledge post war. It was even written up in school history books. I know this because I included it in one of my early-1970s high school papers for history class. How advanced they were was not common knowledge, but that they were actually more advanced in nuclear research than the Germans in some instances was known.
Sorry, but this all reminds me of the "documentary" on the Samurai sword (also originally aired on one of the A&E channels) and the lost secrets of how it was made. Supposedly an American sword maker rediscovered the lost secret of how Samurai swords (the good ones of course) were made. In the documentary not one Japanese person was asked anything about how the swords were made. If they had asked a Japanese swordmaker the "documentarians" would have had to admit that the Japanese artisans have been making the Samurai type swords using the "lost" methods continuously for the last thousand(?) years.