I don't know the book but it has from what you say the loud ring of a book about science/history/mathematics e.g. written by a journalist, mostly likely a Yank one: the long irrelevant globs of text about researchers' past, physical appearance, families, preferences ('His favourite T-shirt is a blue-violet one asking the question, in pink-typefaced binary code, "Can You Take A Selfie Next To A Black Hole?") etc. etc. If that's that sort of book this is, why not skim through the stupid stuff till you get to the good part, i.e. the actual work on the atomic bomb? and once you've reached it, you can skim through the stuff like 'Teller noticed with a glance that Oppenheimer was suppressing a yawn; he could not have known at the time that both of them were at that moment longing for a submarine sandwich' to get, you know, hopefully, actual information.