Rural Ridge, Pa. was home to the Monarch Mine, which was opened in the early 20th Century by Saxman and Sons, then operated by Monarch Fuel Co., and finally Duquesne Light. Today Rural Ridge functions as a bedroom community for Brackenridge, New Kensington, and the greater Pittsburgh area. The only structure I can see that is still remaining from the mine is the hoist house, but it was inaccessible to me.