[John Beresford Tipton]

"You need about a square mile of centrifuges"

Exactly, these guys ever see a picture of Oak Ridge?

[Henk]

Oak Ridge (K-25) was a gas diffusion plant, not a gas centrifuge plant. It doesn't take as much space with gas centrifuge technology. Also, they'd only need to enrich enough for the first bomb, right, not enough to supply the entire US nuclear fuel industry.