Due to collapse accident of main chute took place in Xincheng Gold mine, the ore lifting system of main shaft was paralysed which caused grave effect on mine operation.
新城金矿主溜矿井曾发生塌落事故，造成了主竖井矿石提升系统的瘫痪，严重影响了矿山生产任务的完成。
2
As for ore drawn by hand or rock loader, the ore drawing quantity of each chute shall be kept uniform to ensure the flatness of working face of stope.
人工出矿或装岩机出矿方式，各出矿穿必须均匀出矿，保证采场工作面平整。
3
The mid-19th century, experienced a mechanical transmission belt chutechute and round, becoming one of the major fine-grained non-ferrous metals ore sorting equipment.