Section 39-6-103 - Listing of mining claims and mines(1) The assessor shall list all mining claims and mines located within his county on the assessment date, including for each claim the name of the lode, placer, millsite, or tunnelsite, the United States mineral survey number, if any, the name of the mining district in which such claim is located, and the number of acres contained in such claim. If a claim is not patented, the numbers of the book and page at which the location of such claim is recorded in the county records shall be used in place of the United States mineral survey number. If two or more mining claims are included in one patent with one United States survey number, the assessor shall list together such mining claims with the one survey number and the total number of acres contained therein. In listing mining claims, abbreviations of words and figures may be used. If other land is part of such mine, then the numbers of the book and page at which the conveyance deed is recorded on the legal description of such other land shall be used in place of the United States mineral survey number.(2) Whenever, to the knowledge of the assessor, contiguous mining claims are worked or operated through or by means of the same shafts, tunnels, or other openings, they shall be listed as one unit; and whenever, to the knowledge of the assessor, contiguous placer claims are worked or operated by means of the same ditch or other works, they shall be listed as one unit, including such ditch or other works; and whenever, to the knowledge of the assessor, contiguous other land is used in the same manner as the claims referred to in this subsection (2), it shall also be listed as one unit.(3) The mining property of a mine shall include mining claims and all other lands and interests therein, whether owned by federal, state, or lesser governmental subdivisions or otherwise and whether owned in fee or held by discovery and location or under easement, lease, license, or other arrangement with the owner thereof, unless otherwise provided for in this article.L. 65: R&RE, p. 1102, § 1. C.R.S. 1963: § 137-6-2. L. 85: (1) and (2) amended, p. 1211, § 6, effective May 9.