43 CFR 3830.22 - Will BLM refund service charges or fees?
(a) BLM will not refund service charges, except for overpayments.
(b) BLM will refund maintenance and location fees if:
(1) At the time you or your predecessor in interest located the mining claim or site, the location was on land not open to mineral entry or otherwise not available for mining claim or site location; or
(2) At the time you paid the fees, the mining claim or site was void.
(c) BLM will apply maintenance and location fee overpayments to future years if you so request.