Recovering residual ore body technology in open-pit;

For the purpose of recovering mineral resources,stabilizing the mine producibility,prolonging the service time,the remained ore carried on open-pit mine.

Based on the analysis and study on the cause of affecting blasting effect in open pit of Yinshan Lead zinc Mine, a series of technical and management suggustions and measures, which is reducing boulder yield, frequency of rock toe and back break, are put out, so the way of improving mine economic benefit are discussed.

Elimination methods of blasting toes in open stope of Tiegukeng mine;