Abstract: In order to recover the resources with potential danger leaved by underground mining，the complete mining method system for crisis mines transferred from underground to open pit mining，has been established to guide a smooth transition from underground to open pit mining.In view of various underground mined-out areas under the stope，the large scale mined-out area and the mined-out area group are treated before open-pit mining to achieve the macro geological environment rebuilding for open-pit，and the small scale mined-out areas and the unknown mined-out areas that affect the engineering safety at local place are surveyed and disposed by caving blasting to achieve the reconstruction of micro condition for open-pit mining.The keys of production organization and field management for this type of mine are summarized.These are all helpful to lay a foundation for the cooperative operation of mined-out areas disposing and open-pit mining.

Key words: Underground mine, Open-pit mine, Resources with potential danger, Underground mined-out area, Caving blasting