Look up federal mining claim records for a Public Land Survey System section
domain: BLM Mineral & Land Records System (MLRS) · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Access reports.blm.gov/reports/MLRS or navigate via mlrs.blm.gov's "BLM Reports" link.
Search/report by state, county, or PLSS township-range-section to list mining claims and related case types (fluid minerals, solid minerals, land use authorizations).
Alternatively, retrieve the downloadable MLRS Data Set for use in GIS software (ArcGIS Online Map Viewer or equivalent) when bulk spatial data is needed.
Note that MLRS supersedes the legacy LR2000 Mining Claim Recordation Module, which was phased out as of January 25, 2021 in favor of MLRS plus Pay.gov for online mining claim transactions.
Cross-reference claim/serial numbers against the case type codes documented in BLM's "Ten Things to Know About the MLRS Mining Claims Module" post before interpreting status fields.
Known gotchas
MLRS is a reporting/GIS-export system, not a documented public REST API — programmatic access means consuming the GIS map service or bulk data export, not calling discrete endpoints.
Legacy LR2000-era case numbers and MLRS case numbers can coexist for older claims; a claim's history may be split across the two systems' record-keeping conventions.
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