U.S. DEPARTMENT OF THE INTERIORBUREAU OF LAND MANAGEMENT
Maintaining a Mining Claim
Maintenance requirements are based on the assessment year which begins September 1.
Failure to meet any of the annual requirements will result in the claim(s) or site(s) being deemed to be forfeited.
If a claimant owns claims in more than one state, he/she must file a waiver form in each appropriate BLM State Office.
By filing a waiver form, the claimant is stating that assessment work has been or will be done, and that the proper affidavits of labor will be timely filed.
Annual Assessment Work
Claimants who perform assessment work must spend a minimum of $100 in labor or improvements on each claim, and record evidence of such with the BLM by December 30th of the calendar year in which the assessment year ended. FLPMA required the same document be filed with BLM which has been or will be recorded with the appropriate county office. The charge for recording an affidavit of annual assessment with BLM is $10 per claim. The annual assessment document must be filed or postmarked by December 30th.
The assessment work must be performed within the period defined as the assessment year.
Assessment work is not a requirement for owners of mill or tunnel sites; however, they must file a notice of intent to hold (NOIH) the site. BLM requires a $10 service charge per site for filing a NOIH.
Assessment work includes, but is not limited to, drilling, excavations, driving shafts and tunnels, sampling (geochemical or bulk), road construction on or for the benefit of the mining claim; and geological, geochemical, and geophysical surveys.
Chart showing all Fees & Service Charges