Penicillin meeting is just the cover story for atomic bomb meeting

On December 17 1941, the medical wing of America's famous OSRD war research agency held a rare - possibly unique - meeting outside the Washington beltway.

Even rarer was the presence of one attendee, the boss of the OSRD himself, Vannevar Bush, never one to think war would be won by advances in medicine.

What on earth was really going on ?