Coal mine production safety is seeking business efficiency, seek survival and development of the basic requirements, for the management of the coal mine is an eternal theme.
安全生产是煤矿企业求效益、谋生存基本要求，是煤矿管理工作的永恒的主题。
Coal mine production safety is seeking business efficiency, seek survival and development of the basic requirements, for the management of the coal mine is an eternal theme.
安全生产是煤矿企业求效益、谋生存基本要求，是煤矿管理工作的永恒的主题。
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