The note can be found in Carleton Mine, on a desk near the shotgun contraption.
I found another one of them "ghouls" in this mine tonight. He looked just like me, but his mind was fried. I tried talking to him. Stupid. He just ran at me.
If Lev's right, I could turn into one of those things at any time...Yeah, there's only one way out of this.
I'm not sure I can to pull a trigger on myself. I keep losing my nerve. I'm an engineer, dammit! I'll think of something. Maybe I should take the human element out of it. I'll need a workshop. This engine room will work, if I stash all the corpses somewhere.