Phosphate mine.
Ref.:
- Wen-Xiu Li, Shao-Chong Yang, Er-Zhong Chen, Jin-Li Qiao, and Lan-Fang Dai (2006): Neural Network Method of Analysis of Natural Slope Failure Due to Underground Mining in Mountainous Areas. Rock and Soil Mechanics [Gong Kuangzi Donghua] 27(9), 1563-1566.
- www.chinamining.org/Facts/2006-10-16/1160978148d1583.html