Once a year, or whenever you have to put a number in front of somebody: exactly how much ground does the portfolio actually capture? GroundControl measures it. Every claim in the portfolio is examined against every recorded claim polygon and excluded-lands boundary around it — producing captured acreage claim by claim, third-party overlaps named by senior serial number, phantom gaps between claims that were never really covered, and discovery monuments sitting where they shouldn't. It is the audit behind a regulatory disclosure, a stakeholder or investor report, and the acreage schedule an attorney puts in a due diligence file.
Why the stated acreage is usually not the real acreage
A claim block’s headline acreage is the sum of what the claims were laid out to cover. What they actually hold is a different number — reduced by senior positions that were already there, by excluded ground the layout crossed, and by phantom gaps where adjoining claims never quite met.
That difference is not academic when the number is going into a regulatory filing, an investor deck, or a purchase agreement. GroundControl produces the defensible version, with the arithmetic shown claim by claim.
What GroundControl Examines
Every claim in the subject portfolio is analyzed against two layers:
- All recorded mining claim polygons in the area — identifying where subject claims overlap earlier-dated (senior) claims. Each overlap is measured by acreage and the specific senior claim serial number is identified.
- Excluded-lands polygons — patented land, fee land, state land, withdrawn land, and other areas closed to mineral entry. Any subject claim body or discovery monument falling within excluded lands is flagged.
The analysis is temporal — it uses location dates to determine seniority. Earlier-dated claims are senior. Where boundaries overlap, the senior claim controls the disputed ground.
Outcome Classifications
Valid
Claim is intact. No carving by seniors or excluded-lands polygons. No DM conflict.
Reduced
Claim is partially affected by exclusions, senior overlaps, or both. Acreage loss is calculated.
Fully Overstaked
Claim body is 100% overlapped by earlier-dated claims. No remaining acreage.
Invalid Claim
Discovery monument falls within a senior claim boundary or excluded-lands polygon.
What the Report Delivers
- Executive summary — overall portfolio health: percentage valid, reduced, overstaked, and invalid. Total acreage accounting from original to remaining.
- Claim-by-claim findings — every affected claim listed with its specific geometric observation, the senior claim serial numbers involved, and original/excluded/senior-reduced/remaining acreage.
- Discovery monument analysis — flags any DM coordinates falling within a senior claim boundary or excluded-lands polygon. DM placement issues are the most critical finding because they can affect the validity of the entire claim.
- Acreage accounting — original acreage versus remaining acreage after excluded-lands carve-outs and senior overlaps. Reported at the claim level and rolled up to the portfolio level.
- Senior claim identification — every senior claim causing a conflict is identified by serial number, so counsel can investigate ownership, current status, and chain of title.
- Publication-ready maps — Professional GIS layouts showing subject claims, senior overlaps, excluded-lands polygons, DM locations, and conflict zones.
- Excel workbook — full claim inventory with outcome classifications, acreage fields, and conflict details on sortable tabs.
What GroundControl is Not
GroundControl describes geometric and temporal facts from BLM administrative records. It is not a legal opinion, title examination, boundary survey, or chain-of-title analysis. Mining claim validity rules vary by state and by interaction with federal withdrawals, state selections, and other overlapping dispositions. The legal effect of any geometric finding is a question for counsel.
The findings are built for attorney review. Counsel determines whether a particular DM conflict, body overlap, or excluded-lands carve-out renders a claim invalid, reduced, or defensible.
Who Needs GroundControl
- Publicly traded companies reporting mineral holdings to regulators, stakeholders, and investors, who need the captured acreage figure to be defensible rather than aspirational.
- Mining companies that have staked a claim block and need to verify what they actually hold before committing development capital.
- Mineral title attorneys preparing opinions of title or supporting acquisition closings who need a verified geometric baseline for every claim in the portfolio.
- Acquirers and investors evaluating a claim portfolio as part of a transaction who need to know how much of the stated acreage actually survives seniority and exclusion analysis.
- Land departments managing large portfolios who need to identify and triage conflicts across hundreds or thousands of claims.
- Exploration teams planning drill programs who need to confirm their target sections are on valid, uncontested ground before permitting.
How It Fits the Workflow
GroundControl is the reporting step at the end of the lifecycle — and the one clients come back to on a cycle rather than once:
- Mineral Exploration Report identifies the play and ranks candidate ground.
- Land Status Report audits the specific area — claims, encumbrances, and land status.
- Claim Mapping & Ground Verification confirms what is genuinely open before staking.
- Claim Staking stakes the ground with automated packages.
- AOI Change Monitoring watches the ground on a standing cadence.
- GroundControl audits what the portfolio actually captures, for the report that has to go out the door.
Run GroundControl on Your Claim Block
Send us your lead file number, case serial numbers, or area of interest and we'll scope the analysis.
Request a GroundControl Analysis