Core Natural Resources (NYSE:CNR) reported quarterly earnings of $0.41 per share which missed the analyst consensus estimate of $0.72 by 43.06 percent. This is a 341.18 percent increase over losses of $(0.17) per share from the same period last year. The company reported quarterly sales of $1.084 billion which beat the analyst consensus estimate of $1.060 billion by 2.27 percent. This is a 6.59 percent increase over sales of $1.017 billion the same period last year.