https://scienceblogs.com/tag/coal-mine-disaster
coal mine disaster | ScienceBlogs
coal mine disasterscienceblogs
https://www.ibtimes.co.uk/turkey-soma-disaster-coal-mine-owner-denies-negligence-1448812
Turkey Soma Disaster: Coal Mine Owner Denies Negligence | IBTimes UK
May 16, 2014 - Operator of mine where 282 people were killed defends response to disaster.
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