Neb. Admin. Code § 350-13-001.08 — Well shall mean an orifice in the ground made by drilling, boring, or in any other manner from which any mineral is obtained or obtainable or which is being made for the purpose of obtaining minerals

001.09 Working interest shall mean the remaining percentage after royalty interests and overriding ro yalty interests. Such working interest is commonly 87.5 percent (87.5%) or less and belongs to the lessee and others involved in the production in regard to oil, gas and petroleum production leases. (Neb. Rev. Stat. Sections 57-219, 57-234 through 57-236, R.R.S 2004 and Neb. Rev. Stat. Sections 77-103 and 77-702, R.S. Supp., 2007.) Nebraska Department of Revenue Title 350, Chapter 13, Rev. 3/15/09 Property Assessment Division Mineral Interests Regulations 3 REG-13-002 ASSESSMENT 002.01 Mineral interests, either producing or non-producing, are real property and shall be valued for taxation as any other real property whether or not such mineral interests are severed from the surface interests. For more information, see Real Property Regulations, Chapter 10. 002.02 Any owner of land from which a mineral interest has been severed or the owner of a mineral interest which has been severed may file an application with the assessor of the county where such land is located to separate for purposes of assessment and taxes such severed mineral interest from the surface interest and place them separately on the assessment and tax roll of the county. When proof of ownership of the severed mineral interest is not made available to the assessor, the mineral interest shall be assessed to the owner of the surface interest. The applicant shall, at his or her own cost, provide to the assessor proof of ownership of the severed mineral interest and a record of the creation of the severed mineral interest, as shown by the records of the county clerk or register of deeds. Proof of ownership, the name and last known address of the owner or owners, the ownership interest including any fractional interest, legal description, and the record of creation of the severed mineral interests shall be provided in the form of an opinion by an attorney or a certificate prepared by a licensed abstracter. 002.03 The application requesting separate assessment listings of a severed mineral interest and surface interest must be filed with the assessor on or before January 1 of the year in which the interests are to be separately listed and assessed. The mineral interest will continue to be separately assessed without a new application regardless of any change of ownership of either the surface interest or the mineral interest. If after separate assessment the owner of the surface becomes the owner of the mineral interest, so that all interests in the surface and the mineral interest are the same, the owner of the surface may request in writing, along with proof of recorded ownership, that the separate assessment cease. Upon receipt of the request and proof of recorded ownership, the assessor shall combine the values of the surface and mineral interest.