High temp alerts were going off for Kiln 3 cooler tunnel. It was during shift change and the 7 pm conveyor man was called to go check it out. They saw smoke from the building and called fire dept for help at 7:02 pm. MSHA was notified at 8:15pm. Belts 57-811 and 57-812 were burned. Fire dept was cleaning up at 8:30pm. Unsure exact extiguish time.