Tunnel Site
A subsurface right-of-way for accessing lode claims or exploring for undiscovered mineral deposits, up to 3,000 feet in length.
Detailed Definition
A tunnel site is a form of mining claim that provides a subsurface right-of-way for the purpose of developing a lode claim or discovering veins, lodes, or ledges through a tunnel.
Key characteristics of tunnel sites: - Maximum length: 3,000 feet from the tunnel portal - Width: Extends 1,500 feet on each side of the tunnel centerline - Provides rights to any blind veins discovered within the tunnel - Does not require discovery prior to location
Purpose of tunnel sites: - Access existing lode claims from a lower elevation - Explore for undiscovered mineral deposits - Provide drainage and ventilation for mining operations - Create efficient ore extraction routes
Tunnel sites are less common today but remain a valid form of mining location under the General Mining Law.
Related Terms
Mining Claim
A parcel of land for which a claimant has asserted a right of possession and the right to develop and extract mineral resources.
Lode Claim
A mining claim for minerals found in veins, lodes, or rock in place, such as gold, silver, or copper deposits.
Mill Site
A type of mining claim for non-mineral land used to support mining operations, limited to 5 acres.