Release of the list came as West Virginia Gov. Joe Manchin signed an executive order calling for more than 200 underground coal mines in his state to undergo immediate inspections for combustion risks.

Mining executives told members of Congress Wednesday that they believed the conditions at the Upper Big Branch facility – where safety officials repeatedly cited operators for failing to properly ventilate highly flammable methane gas and coal dust – were not typical of coal mines elsewhere.","url":"https://www.goodmorningamerica.com/news/story/dangerous-mines-america-10376336","contentType":"story","section":"news","wordCount":356,"columns":2,"inlinesTypes":[],"provider":"ABC News","publisher":{"name":"ABC News","logo":{"name":"ABC News","url":"https://s.abcnews.com/images/Site/abc_logo_aluminum_60px.png","height":60,"width":150,"@type":"ImageObject"}},"contributors":[{"name":"MATTHEW MOSK","url":"/author/MATTHEW_MOSK","role":"","logo":"","logoAlt":"","type":"","urlTarget":"_self"}],"publishedDate":"2010-04-14T21:07:23Z","firstPublishedDate":"2010-04-14T21:07:23Z","modifiedDate":"2010-04-29T18:57:09Z","editorialDate":"2010-04-14T21:07:23Z","alternativeHeadline":"Six are Massey Energy properties; 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