The movie "Out of the Furnace" will not be short on authenticity. It features a full size steel furnace and the actors are not quesy about working on it.

Writer-Director Scott Cooper is all praises for his cast not just for their skill, but also for their bravery with their roles.

In an interview with Collider, Cooper shares the hazards that Christian Bale went through and how he refused to have a stunt double:

"It's extraordinarily hot, yes. It was very dangerous. Christian Bale would never even think of having a double. Christian hasn't used a double, that I'm aware of, for the whole film.  Certainly that work inside the steel mill was done extraordinarily professionally, and he had training, of course, and we had medics and all those things there that you should have, but Christian completed that work in a way that made me feel like he not only could do anything, which he really can, but it was just so believable and authentic that you would never know that was Christian Bale if you didn't see his face while he was doing it."

On why there were so many scenes at the furnace: "Well, it certainly helps establish the community, it establishes his character, helps establish the type of person because a certain type of person does that work ... he doesn't sell insurance. That will certainly come to bear later in the film."

Once again, that was really Christian Bale, not a stuntman's back who turns around and then we see Bale's face? "No. No, you will see Christian Bale, literally. And I never cut out of that, so it's Christian for sure."

What is the main message of the film and the era it strives to portray?

"It's just a vanishing way of life, really, and it's an examination of the nature of violence in a society where men solve their own problems. It's happening in Syria, it's happening all across the Arab Spring, it happens all too often in America, France.  It's unfortunate, but it's a way of life.  There are many things about a vanishing way of life that occur in this film that these men do."

On the subject of the bare knuckle fighting, it was a secret but the interviewer caught sight of Casey Affleck's bruised knuckles:

 "How did you know about that? Casey's knuckles are really scarred, for sure."

Was it part of the authenticity that the film aspires to?

"Well it even takes place on the lower east side of Manhattan. I've seen some there, but yes. When men come home from war and they don't have anything else to do because they don't have the skill set to sell insurance or be a medical doctor or physician, they do whatever they can to survive. In this case, bare-knuckle fighting is a way for some of their pent-up anger to manifest itself."