Using the existing open pit, the stripping and mining site is rationally adjusted, and conditions are created for realizing the innerdump and extending the open pit service life of Gushan Iron Mine.
利用现有的露天采坑，合理调整采剥部位，创造条件实现内部排土，延长了姑山铁矿露天采场的服务年限。
2
Taking the dump of No. 2 surface coal mine in Shenglidong mining area in Inner Mongolia as a case. The research method is the combination of on-site investigation and data analysis.