The technology transfer was revealed in the book Critical Mass (1998) by Carter Hydrick. The book has largely been ignored because of its inconvenient truth. Also, Hydrick, a meticulous researcher, did not highlight the significance of his findings as I have. Instead, he focused on the details of US atomic bomb production, Bormann’s movements, the U-234 logbook, etc. to prove his case.
“Reads like a gripping drama . . . . This book marks a turning point in the history of atomic-bomb scholarship, and no future study can credibly ignore its compelling contentions . . . . A genuinely original book about a profoundly important topic.” — The Kirkus Reviews