Core Natural Resources (NYSE:CNR) reported quarterly earnings of $1.04 per share which missed the analyst consensus estimate of $3.09 by 66.34 percent. This is a 79.41 percent decrease over earnings of $5.05 per share from the same period last year. The company reported quarterly sales of $595.291 million which beat the analyst consensus estimate of $553.850 million by 7.48 percent.