Article 14 Mine pillars and rockpillars to be preserved as specified in the mining designs shall, within the prescribed period of time, be protected and may not be exploited or damaged.
第十四条矿山设计规定保留的矿柱、岩柱，在规定的期限内，应当予以保护，不得开采或者毁坏。
2
No one is quite sure how the massive pillars of rock were formed, but it is thought that people started to live there in the 9th Century.
没有人可以确定那些巨大石柱是怎么建造出来的，但是一般认为人们从9世纪就开始住在那里。
3
This subject introduce some common rectangle ore pillars and its advantages, and rock mechanics analysis and evaluation of rectangle ore pillars support effects.