1. Question: By what practical method was uranium 235 obtained in large quantities, and which method now is considered to be the most promising (diffusion, magnetic, or some other)?
2. Question: How can the space charge of the ionic beam in a mass-spectrograph be compensated for?
3. Question: Is it feasible to execute a uranium pile using a natural mixture of isotopes and ordinary ["light"--ed.] water as a moderator?
4. Question: What substance is used for cooling the uranium blocks themselves?
5. Question: What is the temperature change of the multiplication factor, what is the numerical equivalent of the temperature coefficient of the multiplication factor?
