News of the nation's worst coal-mining disaster in a quarter century - a methane explosion that killed at least 25 miners in West Virginia - has been accompanied by revelations that the mine in question, belonging to a subsidiary of Massey Energy, has an egregious safety record. 57 times in the last month, the mine was cited for safety violations - including for failing to properly ventilate explosive methane. It seems this was less an accident than an accident waiting to happen. I profiled Massey CEO Don Blankenship in Rolling Stone's 'Climate Killers' package in January.