Smoke was observed coming from the raw coal pile at approx. 6pm on 6/7/17. A track-hoe was dispatched to the spot observed & began digging our the spot where the smoke was observed. At approx. 8:45am MSHA inspector arrived on site and questioned if we had reported the incident. Part 50 is a fire not extinguished within 30 min not smoke! We were issued a citation.