BLM Mining Claims Procedures

Anyone can stake a hardrock mining claim on most federal public land — gold, silver, copper, lead, zinc, uranium, rare earths, lithium. The right to do so comes from the General Mining Law of 1872, which remains substantially unchanged after 150 years and lets U.S. citizens (and any non-citizen who has filed a declaration of intent) physically locate, record, and develop mineral claims on "open" federal land. The procedural framework that turns a stake in the ground into a legally recognized claim — and the maintenance-fee regime that keeps it active — lives at 43 CFR Part 3800, the Bureau of Land Management's master regulation governing mining claims under the General Mining Law.

Current Rule (2026)

Key Mechanics

The BLM mining-claim system operates as a self-initiation, fee-maintenance regime:

1. Location — a citizen physically stakes a claim on open federal land (no auction, no permit, no prior government approval).
2. County recording + BLM filing — the claimant records a certificate of location with the county recorder and files it with BLM within 90 days, paying an initial filing fee.
3. Annual maintenance fee — $200 per claim/site (2025 rate) paid by September 1 each year; failure causes automatic forfeiture.
4. Plan of operations — any ground-disturbing work above "casual use" requires BLM approval, NEPA review, and a reclamation bond under 43 CFR 3809.
5. Patent (blocked) — the 1872 pathway to fee-simple ownership is suspended by a Congressional moratorium in place since 1994.

The key regulatory citations are 43 CFR Part 3800 (master framework) and 43 CFR Part 3809 (surface management/operations).

What "Mining Claim" Actually Means

A mining claim under the 1872 Law is a possessory interest in federal land — the right to extract minerals — not fee-simple ownership. The land itself remains property of the United States. The claimholder has the right to:

• Enter and occupy the claim
• Prospect, mine, and extract any "locatable" minerals (defined by case law as minerals not specifically reserved to the government under other statutes like the Mineral Leasing Act)
• Sell, lease, mortgage, or assign the claim to others
• Apply for a patent to convert the claim to fee-simple ownership — though Congress has imposed a moratorium on new mineral patents since 1994, making patenting effectively unavailable for new claims

Mining claims do NOT confer:

• Rights to non-locatable minerals (oil, gas, coal, oil shale, phosphate, potash, sodium — those are leasable under the Mineral Leasing Act)
• Rights to "common variety" minerals (sand, gravel, common clay, common stone — those are sold under the Materials Act of 1947)
• Rights to surface use that interferes with locatable mineral extraction by others
• Standing to challenge BLM's right to manage the surface for multiple uses (FLPMA preserves BLM's surface management authority)

The Four Claim Types

The 1872 Law and BLM regulations recognize four types of mining claims, each with specific size limits and use restrictions:

• Lode claim: covers veins, lodes, or ledges of rock in place containing valuable minerals. Maximum size: 1,500 feet along the strike (length) × 600 feet across the strike (width) = approximately 20.66 acres.
• Placer claim: covers loose, unconsolidated mineral deposits (alluvial gold, sand-and-gravel-borne minerals). Maximum size for an individual: 20 acres. For an association of up to 8 persons: 160 acres total.
• Mill site: up to 5 acres of non-mineral land used for ore processing, equipment storage, or other operations supporting an adjacent lode or placer claim. Can be located either adjacent to a claim or separately.
• Tunnel site: a corridor up to 3,000 feet long used to discover and develop blind veins beneath the surface.

How to Locate a Claim

Locating a claim requires three physical acts on the ground plus two paperwork acts. The physical acts under 43 CFR 3832 are:

1. Discovery: the locator must make a "discovery" of a valuable mineral deposit — historically, finding mineral in place sufficient to "warrant a prudent person in the further expenditure of labor and means" toward developing a mine. The discovery requirement is the perennial subject of litigation when BLM challenges a claim.
2. Marking the boundaries: erecting posts or monuments at the four corners of the claim (for lode and placer claims) or at the two end-line monuments and any required side stakes, in accordance with the local mining district rules and any state law.
3. Posting a notice of location: a sign at the discovery point bearing the claimant's name, the claim name, the date of location, and (for lode claims) the direction of the lode.

The paperwork acts under 43 CFR 3833 are: 4. Recording a certificate of location with the appropriate county recorder within the time limit set by state law (typically 30–90 days after location). 5. Filing the certificate of location with BLM within 90 days of location, accompanied by the initial filing fee ($49 location fee + $40 processing fee + a maintenance fee for the current assessment year; effective for claims located on or after September 1, 2024).

The Annual Maintenance Fee — The 1992 Game-Changer

For 120 years after the 1872 Law, the only obligation to keep a claim active was performing $100 worth of annual assessment work on the claim each year and filing an affidavit. Most claims went undeveloped while held for speculation, costing the federal government nothing and producing nothing.

In 1992, Congress imposed an annual maintenance fee under 30 U.S.C. § 28f: a flat fee per claim due by September 1 each year, regardless of whether any work is performed. Following BLM's 2024 inflation adjustment, the fee is $200 per lode claim, mill site, or tunnel site and $200 per 20 acres (or portion) of a placer claim, effective for the 2025 assessment year forward. Small miners (10 or fewer claims) can elect to perform assessment work instead of paying the maintenance fee, provided they meet additional filing requirements.

Failure to pay the maintenance fee by the September 1 deadline causes the claim to forfeit automatically — no notice, no cure period, no due-process protection. The claim becomes immediately available for relocation by anyone else (including the original claimant, on the very next day, in practice). The maintenance fee has been the primary tool reducing speculation: nationwide, the number of active claims dropped from over 1.2 million in 1990 to roughly 400,000 today after the maintenance fee regime took effect.

Operations on Claims

Locating a claim and paying the maintenance fee does not by itself authorize ground-disturbing operations. 43 CFR 3809 governs surface management of mining operations and requires:

• Notice of operations (for "casual use" or operations disturbing 5 acres or less of unreclaimed land, with no significant impacts) — minimal review
• Plan of operations (for any operation exceeding the casual-use thresholds or in sensitive areas like wilderness study areas, designated critical habitat, or special management areas) — full NEPA review, financial assurance for reclamation, BLM approval before work begins
• Reclamation bond in an amount calculated to cover BLM's cost of reclaiming the site if the operator abandons it
• Annual reporting of operations and reclamation progress

Operations on a mining claim must avoid "unnecessary or undue degradation" of public lands — a key statutory standard under FLPMA that gives BLM authority to require modifications, additional protections, or denial of operations even on validly located claims.

The Patent Moratorium

The 1872 Law permits a claimant who has invested $500 in improvements and met other requirements to apply for a mineral patent — converting the claim to fee-simple ownership at the price of $2.50 per acre for placer claims or $5.00 per acre for lode claims (prices set in 1872). Since 1994, Congress has annually included a moratorium provision in Interior appropriations bills barring BLM from issuing new mineral patents. The moratorium has been renewed every year since. Pre-1994 patents that were "grandfathered" by 30 U.S.C. § 38 are still valid and continue to issue for very old applications that meet a 1994-era cutoff.

How It Affects You

If you're buying or own property near BLM land in the West: mining claims can exist on federal land immediately adjacent to your private property — affecting access, water rights, noise, dust, and resale value. BLM's Mineral and Land Records System (MLRS) lets you search active claims by geographic area before you buy. In Nevada, Arizona, New Mexico, and Idaho — where roughly 87% of BLM land in the Lower 48 is located — active claim density can be very high. A single mining claim (up to ~20 acres for a lode claim) can sit 50 feet from your fence line, and you have no automatic right to object to its location. Once a plan of operations is approved and a bond posted, the operator can begin surface disturbance with limited neighbor notice.

If you're a prospector or small miner: the 1872 Law still gives any U.S. citizen the right to stake a hardrock mineral claim without a permit, auction, or government approval — a right almost unique in federal law. The real costs are: $49 location fee + $40 processing fee + $200 maintenance fee for the first year (~$289 total to establish), then $200/year per claim to keep it active. If you hold 10 or fewer claims, you can substitute $100 worth of documented annual assessment work for the maintenance fee. The hard part is the "discovery" requirement — you must find an actual valuable mineral deposit, not just pick a spot. Claims challenged by BLM for lack of a valid discovery can be invalidated even after years of maintenance payments.

If you live downstream from a mining claim area: a located claim doesn't mean active mining starts tomorrow. Before any significant ground disturbance, the operator must file a plan of operations with BLM (under 43 CFR 3809), complete NEPA review (often 1–3 years for large projects), and post a reclamation bond. You have the right to comment during that NEPA process. But if you're near a historical mining site (pre-1976, before FLPMA), no such review happened — those sites are the source of most acid mine drainage and heavy-metal contamination problems. Cleanup falls primarily under CERCLA Superfund, and BLM has limited remediation authority without it.

If you represent a tribe or live near tribal lands: the General Mining Law of 1872 contains no tribal consultation requirement. Claims can be staked on open federal land adjacent to or overlapping with areas of tribal cultural significance without any prior notice to affected tribes. BLM's obligation to consult under NHPA Section 106 kicks in only when a plan of operations requires federal approval — not at the location stage. The Thacker Pass lithium mine in Nevada (Lithium Americas, construction began 2023) crystallized this gap: the Paiute-Shoshone peoples' objections to a sacred site were heard only after the mine plan was already approved, and courts ultimately declined to halt construction.

If you're tracking critical mineral investment: lithium, cobalt, nickel, and rare-earth deposits on federal land are subject to the 1872 Law's location procedures — meaning any person can stake a claim on a deposit before a company does, and the claim grants the right to develop without paying any royalty to the federal government. This "free access, no royalty" structure is a significant subsidy to domestic critical mineral development, and also a race-to-the-bottom dynamic. Watch for Congressional action on hardrock royalties as the U.S. competes with China's state-directed mineral supply chains.

State Variations

• State mining law layers on top of the General Mining Law — every western state has its own mining district statute requiring location notices, county recording, and (in some states) annual labor affidavits separate from BLM filings.
• A handful of states impose state-level fees, severance taxes, or royalty obligations on mineral production from federal claims.
• Some states (Montana, for example) have stricter reclamation requirements than the federal BLM minimums; BLM defers to the more stringent state requirement where applicable.
• Alaska has its own complex regime under the Alaska Native Claims Settlement Act (ANCSA) — claims on land selected by Native corporations or conveyed to the State of Alaska are governed by Alaska state law and corporate land policy, not BLM.

Legal Authority

This regulatory regime implements:

• 30 U.S.C. §§ 22–25 — the right of location on the public domain; types of claims
• 30 U.S.C. § 28 — annual assessment work or annual maintenance fee
• 30 U.S.C. § 29 — patent issuance procedures (subject to current moratorium)
• 30 U.S.C. § 35 — mill sites and tunnel sites
• 30 U.S.C. § 36 — adverse claims and contest proceedings
• 43 U.S.C. § 1732(b) (FLPMA) — BLM's authority to prevent "unnecessary or undue degradation"

Recent Rulemakings

• November 2003 (68 FR 61046) — Major procedural overhaul of Parts 3800–3838, modernizing fee structures, filing requirements, and definitions
• Annually since 1994 — Congressional moratorium on new mineral patents, renewed in each Interior appropriations bill
• 2024 Maintenance Fee Inflation Adjustment — BLM raised the annual maintenance fee to $200 per claim/site (from $165), and the initial location filing fee to $49 (location) + $40 (processing), effective September 1, 2024 (89 FR 25434). This was the first fee adjustment since 2015.
• 2024 BLM Surface Management Proposed Rule (43 CFR 3809) — BLM proposed updated financial assurance (bonding) requirements for hardrock mining operations, targeting the longstanding "bonding gap" where posted bonds cover less than 10% of estimated remediation costs at many sites. Comment period closed December 2024.
• Inflation Reduction Act (2022) — While not directly amending the 1872 Law, IRA funding for abandoned mine reclamation ($11.3 billion total, primarily for coal) and critical mineral supply-chain investments has reshaped BLM's priorities and staffing around hardrock mining. Hardrock abandoned mine cleanup received a separate $475 million allocation.
• Executive Order 14017 (2021) / Critical Minerals Strategy — Directed BLM to fast-track permitting reviews for domestic critical mineral projects (lithium, cobalt, nickel, rare earths) on federal land, creating de facto prioritization that has accelerated some mining claim development timelines.

Pending Action

• BLM Hardrock Mining Financial Assurance Rule (2024–2025): BLM proposed significantly higher reclamation bond requirements for hardrock mining operations under 43 CFR 3809 to close the "bonding gap" — the difference between bond amounts and actual cleanup costs at abandoned sites. The proposed rule would require full-cost financial assurance (eliminating the current "incremental" bonding approach) for operations with surface disturbance over 640 acres. Industry groups oppose; environmental advocates support. Status as of 2026: final rule pending OMB review.
• Critical Minerals Withdrawal Review (2025): Executive orders emphasizing domestic critical mineral production have prompted BLM to review its withdrawal lists and "segregation" orders that close federal land to mining claims. Some wilderness study area segregations are under challenge. Areas containing lithium, cobalt, and rare-earth deposits in Nevada, Wyoming, and Idaho are under particular scrutiny.
• Mining Fee Modernization: Legislation introduced in Congress would raise the annual maintenance fee (currently $200, set by BLM inflation adjustment in 2024) and impose a royalty on hardrock mineral production for the first time — a change that would fundamentally alter the 1872 Law's "free access" model. As of 2026, no bill has passed committee.
• Thacker Pass Lithium Mine: Following years of litigation over the BLM's environmental review and tribal consultation obligations, Lithium Americas began construction at Thacker Pass, Nevada in 2023 under a DOE loan guarantee. The project — the largest lithium deposit in the U.S. — is a test case for how BLM balances the 1872 Law's open-access policy against tribal rights and NEPA obligations at scale.

What to Monitor

• BLM MLRS (mlrs.blm.gov): Search active claims near your property or area of interest. Updates as new filings are processed.
• Federal Register (regulations.gov): Watch for finalization of the BLM hardrock financial assurance rule (Docket BLM-2023-0008) and any new fee adjustments under 43 CFR 3834.1.
• Interior appropriations bills (annually, September deadline): The patent moratorium must be renewed each year. If Congress fails to include it in the Interior appropriations rider, patent applications could restart — a low-probability but non-zero risk worth tracking if you're near land with old pre-1994 pending applications.
• Congressional royalty bills: Legislation like the Hardrock Mining and Reclamation Act (introduced multiple times, never passed) would impose a royalty of 4–8% on gross revenue from hardrock mining on federal land. Passage would raise mineral development costs and potentially affect claim economics in critical mineral areas.
• State-level reclamation rules: Montana, California, and Nevada have stricter reclamation bonding than the federal minimums. If you're in one of those states, check state mine reclamation programs alongside BLM filings.

Related Pages

• Federal Mining Law — overview of the 1872 General Mining Law and its modern controversies
• Public Lands Management — BLM's broader stewardship framework under FLPMA
• Mineral Leasing Act — the parallel regime for non-locatable minerals (oil, gas, coal, phosphate, potash)
• Outer Continental Shelf — analogous regime for offshore mineral development
• Superfund Hazardous Waste — cleanup framework that addresses many abandoned mining sites