Still another system used in underground mining, which is called caving. This involves making the ore cave in on mined chambers or shafts. The ore is then removed by chutes that carry it down to a deeper level, where there is a haulage system.

• 地下开采使用的另一种采矿法叫作崩落采矿法。这种方法包括使矿石崩落于已采峒室或井筒，然后矿石再通过溜井放到下面水平的运输巷道。