General Provisions

Wyo. Stat. Ann. tit. 30, ch. 1
in effect

Wyo. Stat. Ann. § 30-1-101 Recording mining claims required; requisites of certificate.

(a) A discoverer of any mineral lead, lode, ledge or vein shall, within ninety (90) days from the date of discovery, cause the claim to be recorded in the office of the county clerk of the county within which the claim may exist, by a location certificate which shall contain the following facts: (i) The name of the lode claim; (ii) The name or names of the locator or locators; (iii) The date of location; (iv) The length of the claim and the general course of the vein as far as it is known; (v) The amount of surface ground claimed; (vi) A description of the claim by such designation of natural or fixed object, or if upon ground surveyed by the United States system of land survey, by reference to section or quarter section corners, as shall identify the claim beyond question.

Wyo. Stat. Ann. § 30-1-102 Imperfect certificates void.

Any certificate of the location of a lode claim which shall not fully contain all the requirements named in W.S. 30-1-101, together with such other description as shall identify the lode or claim with reasonable certainty, shall be void.

Wyo. Stat. Ann. § 30-1-103 Prerequisites to filing location certificates.

(a) Before the filing of a location certificate in the office of the county clerk, the discoverer of any lode, vein or fissure shall designate the location thereof as follows: (i) Repealed by Laws 1981, ch. 91, § 2. (ii) By posting at the point of discovery, on the surface, a plain sign or notice, containing the name of the lode or claim, the name of the discoverer and locator, and the date of such discovery; (iii) By marking the surface boundaries of the claim, which shall be marked by six (6) substantial monuments of stone or posts, hewed or marked on the side or sides, which face is toward the claim, and sunk in the ground, one (1) at each corner, and one (1) at the center of each side line, and when thus marking the boundaries of a claim, if any one (1) or more of such posts or monuments of stone shall fall, by necessity, upon precipitous ground, when the proper placing of it is impracticable or dangerous to life or limb, it shall be lawful to place any such post or monument of stone at the nearest point properly marked to designate its right place; provided, that no right to such lode or claim or its possession or enjoyment, shall be given to any person or persons, unless such person or persons shall discover in said claim mineral bearing rock in place.

Wyo. Stat. Ann. § 30-1-104 Additional location certificate to be filed upon change of surface boundaries or addition of new territory.

Whenever it shall be apprehended by the locator, or his assigns, of any mining claims or property heretofore or hereafter located, that his or their original location certificate was defective, erroneous, or that the requirements of the law had not been complied with before the filing thereof, or shall be desirous of changing the surface boundaries of his or their original claim or location, or of taking in any part of an overlapping claim or location which has been abandoned, such locator or locators, or his or their assigns, may file an additional location certificate in compliance with and subject to the provisions of this act; provided, however, that such relocation shall not infringe upon the rights of others existing at the time of such relocation, and that no such relocation, or other record thereof, shall preclude the claimant or claimants from proving any such title or titles as he or they may have held under any previous location.

Wyo. Stat. Ann. § 30-1-105 Location certificates shall describe but 1 claim.

No location certificate shall contain more than one (1) claim or location, whether the location be made by one (1) or more locators, and any location certificate that contains upon its face more than one (1) location claim shall be absolutely void, except as to the first location named and described therein, and in case more than one (1) claim or location is described together so that the first one (1) cannot be distinguished from the others, the certificate of location shall be void as an entirety.

Wyo. Stat. Ann. § 30-1-108 Locators' rights of possession and enjoyment; "mineral boundaries" defined.

The locators of all mining locations heretofore made, or which shall hereafter be made, on any mineral vein, lode or ledge, situated on the public domain, their heirs and assigns, shall have the exclusive right of possession and enjoyment of all the surface included within the lines of their locations, and of all veins, lodes and ledges throughout their entire depth, the top or apex of which lies inside of surface lines extended downward vertically although such veins, lodes, or ledges may so far depart from a perpendicular in their course downward as to extend outside the vertical side lines of such surface locations. But their right of possession to such outside parts of such veins or ledges shall be confined to such portions thereof as lie between vertical planes drawn downward as above described, through the end lines of their locations, so continued in their own direction that such planes will intersect such exterior parts of such veins or ledges. And nothing in this section shall authorize a locator or possessor of a vein or lode which extends in it downward course beyond the vertical lines of his claim to enter upon the surface of a claim owned or possessed by another.

Wyo. Stat. Ann. § 30-1-109 Relocation of abandoned claims.

Any abandoned lode, vein or strata claim may be relocated and the relocation shall be perfected by fixing new boundaries in the same manner as provided for the location of a new claim. The relocator shall erect new or adopt the old boundaries, renewing the posts or monuments of stone if removed or destroyed and fix a new location stake. The location certificate of an abandoned claim may state that the whole or any part of the new location is located as an abandoned claim.

Wyo. Stat. Ann. § 30-1-110 Location certificate for placer claims.

(a) Hereafter the discoverer of any placer claim shall, within ninety (90) days after the date of discovery, cause such claim to be recorded in the office of the county clerk of the county within which such claim may exist, by filing therein a location certificate, which shall contain the following: (i) The name of the claim, designating it as a placer claim; (ii) The name or names of the locator or locators thereof; (iii) The date of location; (iv) The number of feet or acres thus claimed; (v) A description of the claim by such designation of natural or fixed objects as shall identify the claim beyond question. (b) Before filing such location certificate, the discoverer shall locate his claim: (i) By securely fixing upon such claim a notice in plain painted, printed or written letters, containing the name of the claim, the name of the locator or locators, the date of the discovery, and the number of feet or acres claimed; (ii) By designating the surface boundaries by substantial posts or stone monuments at each corner of the claim.

Wyo. Stat. Ann. § 30-1-111 Assessment work for placer claims; character and kind.

For every placer claim, assessment work, as hereinafter provided, shall be done during each and every year after the first day of September following the date of location. Such assessment work shall consist in manual labor, permanent improvements made on the claim in buildings, roads or ditches made for the benefit of working such claims, or after any manner, so long as the work done accrues to the improvement of the claim, or shows good faith and intention on the part of the owner or owners and their intention to hold possession of said claim.

Wyo. Stat. Ann. § 30-1-112 Assessment work for placer claims; amount of work required; suspension by act of congress.

On all placer claims heretofore or hereafter located in this state not less than one hundred dollars ($100.00) worth of assessment work shall be performed during each year from the first day of July after the date of location provided that whenever annual assessment work required by United States laws be suspended by act of congress such assessment work required by this section shall be suspended for the year or years stated in the act of congress.

Wyo. Stat. Ann. § 30-1-113 Assessment work for placer claims; upon contiguous claims.

When two (2) or more placer mining claims lie contiguous and are owned by the same person, persons, company or corporation, the yearly expenditure of labor and improvements required on each of such claims may be made upon any one (1) of such contiguous claims if the owner or owners shall thus prefer.

Wyo. Stat. Ann. § 30-1-114 Assessment work for placer claims; effect of failure to perform.

Upon failure of the owners to do or have done the assessment work required within the time above stated, such claim or claims upon which such work has not been completed, shall thereafter be open to relocation on or after the first day of July of any year after such labor or improvements should have been done, in the same manner and on the same terms as if no location thereof had ever been made; provided, that the original locators, their heirs, assigns or legal representatives have not resumed work upon such claim or claims after failure, and before any subsequent location has been made.

Wyo. Stat. Ann. § 30-1-115 Assessment work; rental fee; affidavit required upon completion or payment.

Upon completion of the required assessment work or payment of the annual claim rental fee as required by federal law for any mining claim, the owner or owners or agent of such owner or owners shall cause to be made by some person cognizant of the facts, an affidavit setting forth that the required amount of work was done or rental fee paid, which affidavit shall within sixty (60) days of the completion of the work or payment of the fee, be filed for record, and shall thereafter be recorded in the office of the county clerk of the county in which the said claim is located.

Wyo. Stat. Ann. § 30-1-116 Patents to placer claims.

When any person, persons or association, they and their grantors, have held and worked their placer claims in conformance with the laws of this state and the regulations of the mining district in which such claim exists, if such be organized, for five (5) successive years after the first day of September succeeding the date of location, then such person, persons or association, they and their grantors, shall be entitled to proceed to obtain a patent for their claims from the United States without performing further work; but where such person, persons or association, they or their grantors, desire to obtain a United States patent before the expiration of five (5) years from the date hereinbefore mentioned, they shall be required to expend at least five hundred dollars' ($500.00) worth of work upon a placer claim.

Wyo. Stat. Ann. § 30-1-117 Use of water.

Whenever any person, persons or corporation, shall be engaged in mining or milling in this state, and in the prosecution of such business shall hoist or bring water from mines or natural water courses, such person, persons or corporation shall have the right to use such water in such manner, and direct it into such natural course or gulch as their business interests may require; provided, that such diversion shall not infringe on vested rights. The provisions of this section shall not be construed to apply to new or undeveloped mines, but to those only which shall have been open and require drainage or other direction of water.

Wyo. Stat. Ann. § 30-1-118 Mining claims subject to right-of-way; construction of ditch or flume.

All mining claims or property now located, or which may hereafter be located within this state, shall be subject to the right-of-way of any ditch or flume for mining purposes, or of any tramway, pack-trail or wagon road, whether now in use, or which may hereafter be laid out across any such location, claim or property; provided, always, that such right-of-way shall not be exercised against any mining location, claim or property duly made and recorded as herein required, and not abandoned prior to the establishment of any such ditch, flume, tramway, pack-trail or wagon road, without the consent of the owner or owners, except in condemnation, as in the case of land taken for public highways. Consent to the location of the easement above enumerated over any mineral claim, location or property, shall be in writing; and provided, further, that any such ditch or flume shall be so constructed that water therefrom shall not injure vested rights by flooding or otherwise.

Wyo. Stat. Ann. § 30-1-119 Protection of surface proprietors.

Where a mining right exists in any case and is separate from the ownership or right of occupancy to the surface, such owner or rightful occupant of the said surface may demand satisfactory security from the miner or miners, and if such security is refused, such owner or occupant of the surface may enjoin the miner or miners from working such mine until such security is given. The order for such injunction shall fix the amount of the bond therefor.

Wyo. Stat. Ann. § 30-1-122 Defrauding, cheating or swindling by "salting".

Any person or persons who shall defraud, cheat, swindle or deceive any party or parties in relation to any mine or mining property by "salting," or by placing or causing to be placed in any lode, placer or other mine, any genuine metals or material representing genuine minerals, which are designed to cheat and deceive others, for the purpose of gain, whereby others shall be deceived and injured by such, shall be guilty of a felony, and upon conviction thereof shall be fined in a penal sum of not less than fifty dollars ($50.00), or imprisoned in the penitentiary for not more than three (3) years, or both, in the discretion of the court.

Wyo. Stat. Ann. § 30-1-123 Protection of livestock from mining shafts.

Every person, persons, company or corporation, who have already sunk mining shafts, pits, holes, inclines, upon any mining claim, or upon any mineral property, ground or premises, or who may hereafter sink such openings aforesaid, shall forthwith secure such shafts and openings against the injury or destruction of livestock running at large upon the public domain, by securely covering such shafts and other openings as aforesaid, in a manner to render them safe against the possibility of livestock falling into them or in any manner becoming injured or destroyed thereby; or by forthwith making a strong, secure and ample fence around such shafts and other openings aforesaid. Any person, persons, corporation or company who shall fail or refuse to fully comply with the provisions of this section shall be guilty of a misdemeanor, and on conviction thereof shall be subject to imprisonment in a county jail for not more than ninety (90) days or fine of not more than one hundred dollars ($100.00) or both such imprisonment and fine in the discretion of the court imposing sentence. Any person, persons, corporation or company who shall fail or refuse to fully comply with the provisions of this section shall also be liable to the owner thereof for any damages sustained by injury or loss of livestock thereby.

Wyo. Stat. Ann. § 30-1-124 Length of lode claim.

The length of any lode mining claim located within Wyoming, shall not exceed fifteen hundred (1,500) feet measured horizontally along such lode or vein. Nor can the regulations of any mining district limit a location to less than this length.

Wyo. Stat. Ann. § 30-1-125 Width of lode claim.

The width of any lode claim located within Wyoming shall not exceed three hundred (300) feet on each side of the discovery shaft, the discovery shaft being always equally distant from the side lines of the claims. Nor can any mining district limit the location to a width of less than one hundred fifty (150) feet on either side of the discovery shaft.

Wyo. Stat. Ann. § 30-1-126 W.S. 30-1-101 through 30-1-126 not applicable to coal mines.

Nothing in this act shall apply to the working of coal mines.

Wyo. Stat. Ann. § 30-1-127 Charge for assays at university.

Hereafter the charge for making assays or tests for silver, gold, copper and lead at the University of Wyoming shall be in accordance with a fee schedule established by the university for charges to any resident of the state.

Wyo. Stat. Ann. § 30-1-128 Construction or operation of railroads or roads by mining companies.

Any corporation or association of persons organized under this article or under the laws of any other state and doing business in this state, now or hereafter engaged in mining gold or silver bearing quartz rock, coal, lead, iron, copper or other materials, may construct or operate a railroad, tramway road or wagon road from their said mine or mines, to any point or points desired by them, and shall have the exclusive right-of-way to the line of their road over the unoccupied public domain for the space of not exceeding one hundred (100) feet on either side thereof, and also, the exclusive possession at the termini of their said road, and at such intermediate points as may be required, for depots, buildings, turntables, water tanks, machine shops and other necessary appurtenances of a railroad, and said corporation or association of persons may file a survey or diagram of such line of road with the lands claimed by them on either side thereof, and also the land claimed at the termini aforesaid, with the secretary of state, and it shall not be lawful for any person or persons to construct any road or erect any buildings or otherwise interfere with the possession of the land so indicated in the survey or diagram as filed aforesaid, and a certified copy of said survey under the seal of the state shall be received in evidence in all courts of law or equity within the state.

Wyo. Stat. Ann. § 30-1-129 Eminent domain for underground right-of-way easements; right of condemnation generally.

Every owner or operator of any mining claims or properties having a common corner who find it necessary for the practical or economical development thereof has the right to condemn and to take, hold and appropriate a right-of-way easement across the corner and under or through the lands of another for underground passages or tunnels, including mine access and ventilation entries. The right-of-way easement shall in no instance exceed two hundred fifty (250) feet in width and any mineral removed from under the lands of another shall be accounted for by the person exercising the rights herein granted to the owner thereof at the gross value thereof on the surface.

Wyo. Stat. Ann. § 30-1-130 Eminent domain for underground right-of-way easements; duty to show good faith and necessity.

In order to exercise the right of eminent domain herein granted the person claiming the benefit of such right shall be required to show that the proceeding is in good faith and that the right-of-way easement is necessary to continue the practical and economical development of a commercially feasible mining operation then being conducted.

Wyo. Stat. Ann. § 30-1-131 Provisions for indemnity in certain contracts; invalidity.

(a) All agreements, covenants or promises contained in, collateral to or affecting any agreement pertaining to any well for oil, gas or water, or mine for any mineral, which purport to indemnify the indemnitee against loss or liability for damages for: (i) Death or bodily injury to persons; (ii) Injury to property; or (iii) Any other loss, damage, or expense arising under either (i) or (ii) from: (A) The sole or concurrent negligence of the indemnitee or the agents or employees of the indemnitee or any independent contractor who is directly responsible to such indemnitee; or (B) From any accident which occurs in operations carried on at the direction or under the supervision of the indemnitee or an employee or representative of the indemnitee or in accordance with methods and means specified by the indemnitee or employees or representatives of the indemnitee, are against public policy and are void and unenforceable to the extent that such contract of indemnity by its terms purports to relieve the indemnitee from loss or liability for his own negligence. This provision shall not affect the validity of any insurance contract or any benefit conferred by the Worker's Compensation Law of this state.

Wyo. Stat. Ann. § 30-1-132 Provisions for indemnity in certain contracts; definition.

The term "agreement pertaining to any well for oil, gas, or water, or mine for any mineral" as used in W.S. 30-1-131, means any agreement or understanding, written or oral, concerning any operations related to drilling, deepening, reworking, repairing, improving, testing, treating, perforating, acidizing, logging, conditioning, altering, plugging, or otherwise rendering services in or in connection with any well drilled for the purpose of producing or disposing of oil, gas or other minerals, or water, and designing, excavating, constructing, improving, or otherwise rendering services in or in connection with any mine shaft, drift, or other structure intended for use in the exploration for or production of any mineral, or an agreement to perform any portion of any such work or services or any act collateral thereto, including the furnishing or rental of equipment, incidental transportation, and other goods and services furnished in connection with any such service or operation.

Wyo. Stat. Ann. § 30-1-133 Provisions for indemnity in certain contracts; exemption.

Provided that nothing in this act shall be construed to deprive an owner of the surface estate of the right to secure an indemnity from any lessee, operator, contractor or other person conducting operations for the exploration or production of minerals on such owner's land.
Source: WY Statutes (Official Site)URL: https://wyoleg.gov/statutes/compress/title30.pdfFetched: 10/4/2026