Plutonium

"Samuel? Samuel Stuhlinger?
Calm yourself Samuel, we are all friends here are we not?
We have no time for such petty rivalries my friend, i feel that Maxis may manipulate your companions into following his orders, he can be a very convincing liar, i know this first hand. For now you must focus on only gaining control of the tower above ground. It is more important than you can possibly imagine!
The components necessary to build an energy conduit to power the tower will only source from this location. When you find them, you must ensure they are not used to help Maxis!
You need to get the others to do what you tell them. That's what working together is, ah? DO IT!"