Read the whole thing. From the Boston Globe:
ANOTHER YEAR, another group of men killed in a coal mine. You already know the story, because it rarely changes. Inspectors discover violations. Mine operators ignore them. Miners work through the danger because they need to make a living. Gas builds up and explodes. Some men die instantly from the force of the blast, and some die from the carbon monoxide. There are always a few unaccounted for or trapped, and those mysteries keep everyone’s hope alive for a while. Then, usually, they die, too.