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UPDATE: I liked this part the best:
Reporter Melissa Block: Would folks in the coal mining industry say, 'Look, this is inherently dangerous work, not everything is preventable and accidents happen that we could have never predicted.
Ward: They certainly do say that. In the case of Sago, that's certainly the story the the International Coal Group has tried to spread. The theory at Sago is that lightning caused that explosion and that's what killed those miners. But as a matter of fact, that mine had a number of electrical violations that had never been fixed that could have played a role in that lightning causing the explosion.
As a matter of fact, in 88%, almost nine out of ten of the deaths that I looked at, there were violations that caused the death, and had those violations not occurred, the deaths wouldn't have occurred. So saying "accidents will happen" is a nice sounding cliche, but until these violations are eliminated, I'm not sure that's really much solace to the miners that are dying.