December 6, 1907 The Monongah Mining Disaster was a coal mine explosion at Fairmont Coal Company's Nos. 6 and 8 mines in Monongah, West Virginia.
Monongah mining disaster , article from Wikipedia    https://en.wikipedia.org/wiki/Monongah_mining_disaster

MONAGAH MINE DISASTER  - Dan Cunningham       https://www.youtube.com/watch?v=NK73xK0klC4
MONAGAH MINE   - AJ Lee & Blue Summit       https://www.youtube.com/watch?v=OBEWe6w0RKg
THE MONAGAH DISASTER  - Ryan Taylor       https://www.youtube.com/watch?v=quRFsOIJEmk