State officials have ordered tighter monitoring of methane gas above coal mines in the state after a slap on the wrist from ...
December 6, 1907 – Worst coal mine disaster in US history: 362 miners are killed in an explosion at the Monongah Nos. 6 and 8 coal mines in Monongah, West Virginia. December 19, 1907 – An ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback