Lucky Friday’s No. 4 Shaft - Ten Years from Concept to Completion


David Berberick, Hecla Limited

Hecla Limited’s No. 4 Shaft at the Lucky Friday Mine is the largest capital expenditure in the corporation’s 128-year history and is considered the deepest shaft in the United States.  This paper will discuss the projects history and lessons learned from the initial conceptual design work in 2007 through project commissioning in 2017.  Change management was key for the owner, contractors, and vendors in delivering the operational and organizational success on the project.  The No. 4 Shaft has extended the life of the Lucky Friday mine by 21 years to 2039.
Keywords: Hecla, Lucky Friday, No. 4 Shaft