| 11. | Gas explosions usually happen because of inadequate ventilation to draw out deadly fumes leaking from the coal bed.
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| 12. | Preparatory works are underway to explore and commercialize the abundant coal bed methane potential of our coal deposits.
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| 13. | Green Dragon Gas was incorporated in 2006 in Hong Kong, and mainly extracts coal bed methane in China.
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| 14. | The individual teeth were discovered in the coal bed over the course of about six or seven years.
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| 15. | Explosions are often blamed on a lack of ventilation to clear natural gas that seeps out of coal beds.
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| 16. | One coal bed, where the creek flows between Red Ridge and Green Ridge, has a thickness of up to.
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| 17. | The Pittsburgh rider coal bed, which overlies the lower bench, can range from 0 to 3 feet in thickness.
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| 18. | As of 2012, shale gas, like coal bed methane ( CBM ), is not yet being developed in Indonesia.
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| 19. | Since then the campaign has broadened out to a campaign against coal bed methane and underground coal gasification too.
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| 20. | A nearby coal bing ( spoil heap ) was used as a speedway training track in the late 1960s.
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