Now I know that these are "voices" are actually other sounds being altered by my imagination, which can run pretty wild at times. A real human voice would be unmistakable and I have heard them before and followed them to find a couple of stragglers, maintenance usually or management, working on something that the previous guard forgot to tell me about.
I kind of get a chuckle as I wander through the plant. I mean I can just picture one of the "psychics' from Most Haunted wandering though the plant and positively attesting "There has been a murder in this building, I tell you, a murder!" It's easy to let your imagination get carried away. I laugh as I realize that I am hearing the same kinds of sounds the scare the wits out of those "investigators".
I enjoy the guard shack. It's warm and cozy but you get to look forward to the your walks through the plant and out buildings to make sure everything is secure and nothing is wrong. Saturday evening I entered the water purification building and it was Holy Cow! as I discovered two inches of water on the floor of the subterranean level. The leak was easy to turn off but they still haven't drained all the water out. Maintenance doesn't seem too worried about it.
There are little things to keep me busy but eventually you sense the isolation of being the only human within a quarter of a mile in any direction. You step outside for a minute and let the cold air wake you up as you struggle to not nod off. You can watch TV but I'm not much of a TV watcher. Read a little. I wish I had internet access there but no. It's not a job for a person who can't handle isolation. Fortunately I can. I even kind of enjoy it.