The project is located in Heqing, Yunnan Province. The hydrogeological conditions are complex. In 2010, CINF undertook the technical consultation on the detailed survey of hydrogeology, geotechnics and environmental geology. Through the hydrogeological drilling, geophysical prospecting, detailed survey of hydrogeology, geotechnics and environmental geology, pumping test, CINF developed the hydrogeological conceptual model, and presented the proposals for the prevention against the mine surface water and underground water to solve the potential problems in future mining.

          
Mining collapse                                                    W123 spring outlet