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概述了石门揭煤的危险性,对震动性放炮揭煤的组织及炮眼布置、装药方法及爆破等作业作了全面介绍。
An overview of the dangers of exposing coal in Shek Mun is provided. The organization of the blasting of coal in blasting and the layout of blastholes, the method of charging and the blasting operations are fully described.