The boundary lines of the tunnel shall be established by conspicuous and substantial monuments placed along the lines on the surface at an interval of not more than 600 feet from the face or point of commencement of the tunnel to the terminus of 3,000 feet therefrom.
Cal. Pub. Res. Code § 3907
Manner of Locating Mining Claims, Tunnel Rights, and Millsites
Added by Stats. 1988, Ch. 259, Sec. 11.
Official source: California Legislative Information. Reproduced from public-domain California statutes; confirm against the official source for the current text. Not legal advice.