The incident began at 09:15 BST on Thursday when emergency services were called to the driftmine at Cilybebyll.
事故发生于星期四的9:15，并向Cilybebyll的矿井发出紧急呼叫。
2
The indoor experiment on the filling materials used for downward slicing drift mining with cemented backfill in Gaolong Gold Mine was performed.
对高龙金矿下向分层进路胶结充填采矿法所用的充填材料进行了室内试验研究。
3
This paper describes main technical characteristics of underhand drift hydraulic sand filling method and its successful application at North Part of Wushan Copper Mine.