Annual Filing
The requirement to file proof of annual maintenance fee payment or assessment work with the BLM and county recorder each year to maintain a mining claim.
Detailed Definition
Annual filing refers to the requirement that mining claim holders file proof of maintenance fee payment or assessment work completion with both the BLM and the county recorder each year. Failure to make required annual filings results in loss of the claim.
- Maintenance fee payment: Due by September 1 of each year ($200 per claim for 2025)
- OR Small Miner Waiver: Filed by September 1 certifying that assessment work will be performed
- Affidavit of assessment work: Filed by December 30 if the small miner waiver was filed
County filing requirements: - Vary by state but generally require annual proof of maintenance or assessment work - Filing deadlines vary by state (commonly by December 30 or within a set period after the assessment year) - Some states require recording of an affidavit or notice of intent to hold
- BLM: Failure to pay maintenance fees or file the waiver by September 1 results in automatic forfeiture of the claim under federal law
- County: Failure to comply with state recording requirements may result in loss of the claim under state law
- Claims forfeited for failure to file cannot be reinstated (with limited exceptions)
Key deadlines: - September 1: BLM maintenance fee payment or small miner waiver certification - December 30: BLM affidavit of assessment work (if waiver filed) - State deadlines vary by jurisdiction
Annual filing compliance is one of the most critical aspects of mining claim maintenance. Missing a single deadline can result in permanent loss of valuable mineral rights.
Related Terms
BLM
The Bureau of Land Management, the federal agency that administers public lands including mining claim filings and maintenance.
Assessment Work
Annual labor or improvements worth at least $100 per claim, required to maintain an unpatented mining claim as an alternative to maintenance fees.
Maintenance Fee
The annual fee paid to the BLM to maintain an unpatented mining claim, currently $200 per claim (2025).
Forfeiture
The involuntary loss of a mining claim due to failure to comply with statutory requirements such as annual maintenance fees or assessment work.
Small Miner Exemption
An exemption from the annual BLM maintenance fee for claimants holding 10 or fewer mining claims who perform assessment work instead.