州长曼钦和煤矿安全官员凯文·斯特里·克林说，救援行动还受到爆炸所造成破坏的阻碍。
Governor Manchin and mine safety official Kevin Stricklin said rescue operations also were hampered by the damage caused by the explosion.
西弗吉尼亚州州长曼钦乔说，这些变化有帮助，但议员们从来没有考虑催谷预防措施，仍然没有，Watzman说。
West Virginia Gov. Joe Manchin said those changes have helped, but lawmakers never considered beefing up prevention measures and still haven't, Watzman said.
西弗吉尼亚州州长曼钦乔说，这些变化有帮助，但议员们从来没有考虑催谷预防措施，仍然没有，Watzman说。
West Virginia Gov. Joe Manchin said those changes have helped, but lawmakers never considered beefing up prevention measures and still haven't, Watzman said.
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