Roy Hill Iron Ore Project, PilbaraЯг одоо бидэнтэй нэгдээрэй
2014-3-26 · Roy Hill will be a low risk open pit mining operation. Maximum pit depth will be 100m with a strip ratio of 4:1. Conventional drill, blast and haul techniques will be used to develop the mine. It is planned to be developed in two stages. Stage one includes construction of the infrastructure and mining of 7,200ha of the project site.