Just like the treatment his workers endured Carnegie wasn't any nicer to his competitors. Andrew Carnegie was a phenomenal businessman. Much of his success is due to how he operated his business. He watched the costs of his business intently (Document C), always making sure that the steel was being produced at a lower price than what it was being sold for (Document D), and he watched his competitors even closer. In March 1889, when Allegheny Bessemer Steel built a mill directly across from Carnegie's mill it intimidated Carnegie. Andrew became even more worried when his competitor introduced the direct rolling process. The new process was effective and efficient. It cut down on the cost of production, something that Carnegie couldn't tolerate.