Work on Hecla’s historic Lucky Friday Mine located just outside of Coeur d’Alene in Northern Idaho began in November 2009. The scope includes the sinking of an 18-ft diameter shaft to a depth of 8,800 ft below surface. This is an internal shaft, the top of which is at the 4,900 ft depth level of the existing underground mine. Other associated tasks include lateral development, excavation and construction of an underground hoist station and  16-ft diameter ore bins that are 70 ft high, and installations of the hoisting plant and sinking equipment underground. Cementation was also commissioned with carrying out the feasibility engineering followed by all construction and shaft development detailed engineering.