Work on a new shaft at the Lucky Friday Mine in Mullan is more than 60 percent complete and should be finished in fall 2016, Hecla Mining Co. said.
Hecla is sinking a new shaft to depths of nearly 9,000 feet below the surface, allowing the mine to go after richer silver deposits and extending the Lucky Fridays operating life.
Construction of the new No. 4 shaft will cost about $215 million.
The remaining work involves the actual sinking of the shaft and development of the next level of the mine, Phil Baker, Heclas CEO, said in a news release.