There have been plenty of books and movies about how the Manhattan Project brought together scientists and engineers to create the nuclear bomb. Most of them don’t have a lot of technical substance, though. You know — military finds genius, genius recruits other geniuses, bomb! But if you want to hear the story of the engineering, [Brian Potter] tells it all. We mean, like, all of it.

If you’re looking for a quick three-minute read, you’ll want to give this a pass. Save it for a rainy afternoon when you can settle in. Even then, he skips past a lot of what is well known. Instead, he spends quite a bit of time discussing how the project addressed the technical challenges, like separating out U235.

Four methods were considered for that task. Creating sufficient amounts of plutonium was also a problem. Producing a pound of plutonium took 4,000 pounds of uranium. When you had enough material, there was the added problem of getting it together fast enough to explode instead of just having a radioactive fizzle.

There are some fascinating tidbits in the write-up. For example, building what would become the Oak Ridge facility required conductors for electromagnets. Copper, however, was in short supply. It was wartime, after all. So the program borrowed another good conductor, silver, from the Treasury Department. Presumably, they eventually returned it, but [Brian] doesn’t say.

There’s the old story that they weren’t entirely sure they wouldn’t ignite the entire atmosphere but, of course, they didn’t.  Not that the nuclear program didn’t have its share of bad luck.