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Book Description paperback. Condition: New. Paperback Pages Number: 287 Language: Chinese. Five security system on the author on Coal in the work of production safety leadership. research and summarize a system of safety management in the preparation. I strive to people-oriented safety management as a red line running through them. to expand the research object by pure coal mine safety to coal mine safety in production and life services to all aspects of safety. traffic safety. public order and safety. home safety. trying to upgrade in. Seller Inventory # MY9357