Locating an Unpatented Mining Claim on Federal Land
The General Mining Law lets a citizen take a possessory interest in federal minerals by physical act rather than by application. Nothing is granted, nothing is approved, and the whole structure rests on a discovery the locator must be able to prove years later.
The rule in short
A mining claim is created by discovering a valuable mineral deposit on land open to location, marking the boundaries so they can be readily traced, and recording the notice of location both under state law and with the Bureau of Land Management. No agency approves the location. The claim conveys a possessory right to the minerals and to surface use reasonably incident to mining, and it remains valid only while the discovery holds.
Almost every other way of getting minerals out of federal ground begins with an application to an agency. Location under the General Mining Law does not. A person walks onto open public land, finds something, marks the corners, writes a notice and files it. The government is a recorder rather than a grantor, and the strength of what the locator holds is settled long afterward, if it is ever tested at all.
Land that is open to location
The first question is never geological. Location is possible only on federal land that is open to the operation of the mining laws, and a great deal of it is not. National parks, most refuges, wilderness areas, military reservations, land within an approved withdrawal, land whose minerals were reserved under a patent that excluded them, and land held in trust for a tribe are all closed. Acquired lands, meaning ground the United States bought rather than retained from the public domain, are outside the Mining Law even when they are open to other mineral disposal.
Status is a records question answered from the master title plats and the withdrawal record, and it is answered before anything else. A location on closed ground is void from the start, no matter how good the deposit or how careful the staking, and the labor spent proving it up is unrecoverable.
What counts as a discovery
A claim without a discovery is not a claim. The mineral must be exposed within the boundaries, and the exposure must satisfy a standard courts have stated in two overlapping ways. The older formulation asks whether a person of ordinary prudence would be justified in the further expenditure of labor and means with a reasonable prospect of success in developing a paying mine. The Supreme Court in United States v. Coleman approved the marketability test alongside it, requiring that the mineral be shown to be extractable, removable and marketable at a profit.
Two consequences follow that catch locators out. Value in the ground is not enough; the deposit has to be one that can actually be sold under prevailing conditions, and a rise in price years later does not retroactively validate a claim that was invalid when it mattered. And the discovery must be within each claim. A claimant who stakes forty claims across a district on the strength of one drill hole has one claim with a discovery and thirty-nine without, which is precisely the arithmetic the government uses in a validity contest.
Lode, placer and the form of the claim
The Mining Law divides deposits by their physical form rather than by their chemistry. A lode claim covers a vein or lode of rock in place bearing mineral, and its shape follows the vein: up to fifteen hundred feet along the course of the vein and up to six hundred feet in width, three hundred on each side of the middle of the vein. A placer claim covers deposits not in place, such as gravels carrying gold, and takes a compact form of twenty acres per locator, with associations able to hold more in a single location.
Choosing wrong has consequences. A placer location over what is truly a lode may fail to convey the vein, and a lode location over a placer deposit may cover far less ground than the deposit occupies. Where the character is uncertain, locators commonly stake both and let the record sort it out later. Facilities that support the workings do not belong on either instrument; they go on the nonmineral parcels held as mill sites and tunnel sites.
A perfected claim settles who may take the minerals. It does not permit ground to be moved. Anything beyond casual use requires either a notice or an approved plan of operations under the surface management regulations, with reclamation cost coverage in place first. Operators who begin trenching on the strength of a recorded location are cited for the disturbance, not for the claim.
Marking and recording the location
The physical act is the marking. Federal law requires only that boundaries be distinctly marked so they can be readily traced, but state statutes fill in the detail — corner monuments of stated dimensions, a discovery monument, a posted notice naming the locator and the claim, and a period within which the work must be completed. Those state requirements are not optional additions; a location that fails them can be attacked by a rival locator who later stakes the same ground.
The paperwork runs on two tracks. The notice of location is recorded in the county or recording district where the claim lies, as state law directs, and a copy is filed with the Bureau of Land Management within the window the recordation statute allows after the date of location. A missed federal filing is treated as conclusive abandonment, which is the same unforgiving structure that governs the annual maintenance filing and forfeiture.
What the claim conveys
The holder of a valid unpatented claim has a possessory interest good against everyone but the United States, and good against the United States so long as the discovery holds. It can be sold, leased, mortgaged, inherited and taxed. It is not fee title, and the surface remains federal, subject to management for other resources.
| Question | Unpatented claim | Federal mineral lease | Materials sale contract |
|---|---|---|---|
| How it begins | By the locator's own act on the ground | By agency offering, bid or application | By purchase from the agency |
| What the holder pays | An annual maintenance fee, no royalty | Bonus, rent and a royalty on production | The appraised value of the material taken |
| Duration | Indefinite while maintained and valid | A stated term, extended by production | The term of the contract |
| Agency discretion to refuse | None at location; validity tested later | Substantial, at leasing and at approval | Substantial, including whether to sell at all |
Patenting, the route by which a claimant once converted a claim into fee title, remains in the statute but has been suspended by appropriations riders barring the Department from accepting new patent applications. The practical result is that unpatented tenure is now permanent tenure, held indefinitely by paying the fee and defending the discovery. Which regime applies to a given deposit in the first place is a separate inquiry, worked through in the division between leasable, locatable and salable minerals and in the rule that removed common varieties from location. The idea that a private party may acquire rights by being first to appropriate a resource under public ownership has an odd modern echo in the debate over resources recovered beyond the Earth, where the same structural question is being asked with no location statute to answer it.
Points to carry away
- Location is a self-executing act; no federal agency grants or approves a mining claim.
- A valid claim requires a discovery of a valuable mineral deposit within the claim boundaries.
- Validity is tested by the prudent person standard together with the marketability test the Supreme Court approved in United States v. Coleman.
- Boundaries must be marked on the ground so that they can be readily traced, and state law adds its own monumentation rules.
- The notice of location is recorded locally and must also be filed with the Bureau of Land Management within the statutory window.
- Surface use under a claim is limited to purposes reasonably incident to prospecting, mining and processing.
Questions readers ask
Does a claim have to be surveyed by a licensed surveyor?
No. The federal requirement is that the boundaries be distinctly marked so that they can be readily traced on the ground, which posts and monuments accomplish. Several states impose their own rules on corner marking, side-center monuments and the contents of the location notice, and those rules bind. Surveys become important later, in an adverse proceeding or where two claims overlap, because the party who can show where its lines actually run is the party whose account of the ground the court is able to adopt.
Can a company or a non-citizen locate a claim?
The statute opens location to citizens and to those who have declared an intention to become citizens, and a domestic corporation qualifies. Citizenship is rarely litigated in the first instance because it is presumed and because a challenge on that ground is available only in limited circumstances. Foreign ownership is commonly structured through a United States subsidiary that holds the locations. The practical constraint on foreign participation in hardrock mining comes from other regimes, not from the citizenship clause of the Mining Law.
What happens to a claim located on land later withdrawn from entry?
A withdrawal is prospective. A claim located before the withdrawal takes effect survives it, but the claim must have been valid at that moment, which means a discovery must already have existed. The government tests that question in a validity contest, and claimants have lost claims that were staked on promising ground before withdrawal but never carried a discovery. After a withdrawal, no new location may be made, and work on the surviving claims proceeds under the surface management rules that applied before.
Sources
- Cornell Legal Information Institute — 30 U.S.C. 22, Lands Open to Purchase by CitizensThe base grant that permits exploration, occupation and purchase of mineral lands.
- Cornell Legal Information Institute — 30 U.S.C. 23, Length of Claims on Veins or LodesThe dimensional limits and discovery requirement for a lode claim.
- Cornell Legal Information Institute — 30 U.S.C. 35, Placer ClaimsHow placer claims are located and conformed to the public land survey.
- Cornell Legal Information Institute — 43 U.S.C. 1744, Recordation of Mining ClaimsThe federal filing requirement and the consequence of failing to meet it.
- Cornell Legal Information Institute — 43 CFR Part 3832, Locating Mining Claims or SitesThe regulations on marking boundaries and the acreage of each claim type.
- Cornell Legal Information Institute — 43 CFR Part 3809, Surface ManagementCasual use, notice-level operations and plans of operations on claims.
- Bureau of Land Management — Mining and Minerals ProgramThe agency's account of how locatable minerals are administered.
Justice Partners Journal is a publication, not a law firm. This article states general rules and cites its sources; it is not advice about any particular case, and the law differs by state and changes over time.
