we tested at "trinity" was a plutonium bomb, from home-made plutonium. I had never heard or read of our use of German uranium before, though. Do you have any sources you can cite?
"What if"?
We had enough plutonium for two bombs, and set both of them off--one at trinity, one at Nagasaki. The technology of the plutonium bomb is/was more advanced, due to the nature of the fissile material--plutonium has a VERY SMALL minimum critical mass, and the time period for a fissile generation is VERY short, compared to uranium.