The Mirny Diamond Mine is 525m deep and has a diameter of 1200m.It was the first, and one of the largest, diamond Pipes in the USSR.It is now abandoned.

• 米尔钻石矿坑深525米，其直径为1200米，它是前苏联最早、最大的管状钻石矿之一，目前这处矿场已被废弃。