Strengthing the function of warning and safely is the guarantee of realizing the safety in production of the colliery to improve the safety management.
加强安全警示职能，提高安全管理是实现煤矿安全生产的保障。
Strengthing the function of warning and safely is the guarantee of realizing the safety in production of the colliery to improve the safety management.
加强安全警示职能，提高安全管理是实现煤矿安全生产的保障。
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