BLM National Mining Claims (MLRS) Scraper

Here is one real result, with every field the actor returns:

{
  "serialNumber": "NV105216280",
  "claimName": "WR 195",
  "claimType": "Lode Claim",
  "disposition": "Active",
  "claimStatusLayer": "active",
  "isActive": true,
  "state": "NV",
  "recordedAcres": 20.66,
  "legalDescription": "NV 21 0450N 0700E 032 A NWNE|NV 21 0450N 0700E 032 A SWNE|NV 21 0450N 0700E 032 A NENE|NV 21 0450N 0700E 032 A SENE|NV 21 0450N 0700E 033 A Government Lot 4|NV 21 0450N 0700E 033 A NWNW",
  "legalDescriptionParts": [
    "NV 21 0450N 0700E 032 A NWNE",
    "NV 21 0450N 0700E 032 A SWNE",
    "NV 21 0450N 0700E 032 A NENE",
    "NV 21 0450N 0700E 032 A SENE"
  ],
  "meridian": "21",
  "township": "0450N",
  "range": "0700E",
  "section": "032",
  "createdDate": "2021-01-25",
  "modifiedDate": "2024-10-07",
  "latitude": 41.745461,
  "longitude": -114.043913,
  "geometry": null,
  "legacyCaseNumber": null,
  "caseTypeCode": "384101",
  "blmProductLabel": "Lode Claim",
  "objectId": 1,
  "recordId": "803391412212129792",
  "detailSearchUrl": "https://mlrs.blm.gov/s/case-search?serial=NV105216280",
  "source": "BLM Mineral & Land Records System (MLRS), National Mining Claims",
  "observedAt": "2026-08-15T02:34:59.110Z"
}

The most complete BLM mining claims scraper available. It returns every field the BLM Mineral and Land Records System (MLRS) exposes for each claim, from serial number, claim name, and type to disposition, recorded acres, the full PLSS legal description, and the map centroid, plus an optional boundary polygon, and gives you nine filters to target exactly the claims you need.

📥 Input · 📤 Output · 💰 Pricing · ▶️ Examples

Table of contents

• What it does
• Quickstart
• Input reference
• Output reference
• Example output record
• Run via API and CLI
• Fetch results
• Billing and limits
• FAQ and troubleshooting

What it does

The actor queries the BLM Mineral and Land Records System (MLRS) National Mining Claims layers, applies the filters you pass, and writes one normalized record per claim to the run's dataset. Each record carries the BLM case serial number, claim name, claim type, disposition, recorded acres, the full PLSS legal description (with each aliquot part split into an array), the meridian/township/range/section, created and modified dates, and the claim's map centroid latitude and longitude.

You can pull active claims, closed claims, or both, filter by state, claim type, disposition, name keyword, recording date range, and acreage, or look up exact serial numbers. Turn on includeGeometry to also get the full claim boundary polygon as GeoJSON.

Quickstart

Open the actor, paste this into the input, and press Run. It returns 10 active mining claims in Nevada.

{
  "claimStatus": "active",
  "states": ["NV"],
  "maxRecords": 10,
  "includeGeometry": false
}

Every input is optional. Add nameKeyword (for example LITHIUM), a recordedFrom date to catch new stakings, or serialNumbers to look up exact cases.

Input reference

Field	Type	Required	Default	Description
claimStatus	enum	no	active	Which layer to pull: active (still on the books), closed, or both.
states	string[]	no	["NV"]	Two-letter administrative state codes, for example NV, AZ, CA, CO.
claimTypes	string[]	no	(all)	Limit to certain claim types: Lode Claim, Placer Claim, Mill Site, Tunnel Site.
dispositions	string[]	no	(all)	Filter by case disposition exactly as BLM records it, for example Active, Closed, Void, Relinquished.
nameKeyword	string	no	(empty)	Only claims whose name contains this text, for example GOLD, SILVER, LITHIUM, or a project name.
serialNumbers	string[]	no	(empty)	Look up exact BLM case serial numbers directly, for example NV105216280.
recordedFrom	string	no	(empty)	Only claims recorded on or after this date (YYYY-MM-DD). Best way to catch newly staked claims.
recordedTo	string	no	(empty)	Only claims recorded on or before this date (YYYY-MM-DD).
minRecordedAcres	integer	no	(none)	Only claims with at least this many recorded acres.
maxRecordedAcres	integer	no	(none)	Only claims with at most this many recorded acres.
includeGeometry	boolean	no	false	Also return the full claim boundary polygon (GeoJSON) in addition to the map centroid.
maxRecords	integer	no	10	Stop after this many claims.

Filters combine with logical AND.

Output reference

One dataset item per mining claim. Types: string, number, integer, boolean, string[], object, or null when the source value is absent.

Field	Type	Description
serialNumber	string	BLM case serial number (unique per claim).
claimName	string	Claim name as recorded.
claimType	string	Claim type, for example Lode Claim, Placer Claim, Mill Site, Tunnel Site.
disposition	string	Case disposition, for example Active, Closed, Void.
claimStatusLayer	string	Which layer the record came from: active or closed.
isActive	boolean	Whether the claim is on the active layer.
state	string	Two-letter administrative state code.
recordedAcres	number	Recorded acreage of the claim.
legalDescription	string	Full PLSS legal description, aliquot parts joined by `
legalDescriptionParts	string[]	The legal description split into individual aliquot parts.
meridian	string	PLSS principal meridian code.
township	string	PLSS township.
range	string	PLSS range.
section	string	PLSS section.
createdDate	string	Date the case was recorded in MLRS (YYYY-MM-DD).
modifiedDate	string	Date the case was last modified (YYYY-MM-DD).
latitude	number	Latitude of the claim centroid.
longitude	number	Longitude of the claim centroid.
geometry	object	Full boundary polygon as GeoJSON, only with includeGeometry, else null.
legacyCaseNumber	string	Legacy BLM case number when present.
caseTypeCode	string	BLM case type code.
blmProductLabel	string	BLM product label for the claim type.
objectId	integer	MLRS object id for the feature.
recordId	string	MLRS record id.
detailSearchUrl	string	MLRS case-search URL for this serial number.
source	string	Source label for the MLRS National Mining Claims layer.
observedAt	string	ISO 8601 timestamp of when the record was collected.

If no claims match the filters, the actor writes a single item with a populated error field and does not charge for it.

Example output record

Real record from a live run (input {"claimStatus":"active","states":["NV"]}):

{
  "serialNumber": "NV105216283",
  "claimName": "WR 198",
  "claimType": "Lode Claim",
  "disposition": "Active",
  "claimStatusLayer": "active",
  "isActive": true,
  "state": "NV",
  "recordedAcres": 20.66,
  "meridian": "21",
  "township": "0450N",
  "range": "0700E",
  "section": "032",
  "createdDate": "2021-01-25",
  "modifiedDate": "2024-10-07",
  "latitude": 41.743822,
  "longitude": -114.051869,
  "caseTypeCode": "384101",
  "blmProductLabel": "Lode Claim",
  "recordId": "803393529421299712",
  "detailSearchUrl": "https://mlrs.blm.gov/s/case-search?serial=NV105216283",
  "observedAt": "2026-08-15T02:34:59.110Z"
}

Run via API and CLI

Start a run and read the dataset. Replace <TOKEN> with your Apify API token.

Run synchronously and get dataset items in one call:

curl -X POST "https://api.apify.com/v2/acts/scrapers_lat~blm-mining-claims-scraper/run-sync-get-dataset-items?token=<TOKEN>" \
  -H "Content-Type: application/json" \
  -d '{"claimStatus":"active","states":["NV","AZ"],"nameKeyword":"LITHIUM","maxRecords":50}'

Start a run asynchronously:

curl -X POST "https://api.apify.com/v2/acts/scrapers_lat~blm-mining-claims-scraper/runs?token=<TOKEN>" \
  -H "Content-Type: application/json" \
  -d '{"states":["CA"],"recordedFrom":"2026-01-01","includeGeometry":true,"maxRecords":100}'

Apify CLI:

apify call scrapers_lat/blm-mining-claims-scraper \
  --input '{"serialNumbers":["NV105216280"]}'

Fetch results

Every run writes to a dataset. Fetch items as JSON, CSV, or Excel by changing format:

# JSON
curl "https://api.apify.com/v2/datasets/<DATASET_ID>/items?token=<TOKEN>&clean=true&format=json"

# CSV
curl "https://api.apify.com/v2/datasets/<DATASET_ID>/items?token=<TOKEN>&clean=true&format=csv"

# Paginate large datasets
curl "https://api.apify.com/v2/datasets/<DATASET_ID>/items?token=<TOKEN>&offset=1000&limit=1000"

<DATASET_ID> is returned as defaultDatasetId in the run object. clean=true drops empty and internal fields.

Billing and limits

• Pay per result. Each mining claim record bills on the result event. See the pricing tab for the current per-result price.
• No charge on failure. If no claims match, the actor writes a single item with a populated error field and does not charge for it. Empty runs cost nothing.
• Spend cap respected. Set maxTotalChargeUsd on the run; once reached, the actor stops emitting and charging further billable results.
• Free Apify plans are capped at 10 records per run. Upgrade for higher maxRecords.
• Geometry adds payload, not events. includeGeometry returns larger polygon records but is billed on the same result event as any other claim.

FAQ and troubleshooting

How do I catch newly staked claims? Set recordedFrom to a recent date. Only claims recorded in MLRS on or after that date are returned. Combine with a state and a nameKeyword to watch a mineral or project.

What is the difference between active, closed, and both? active returns claims still on the books, closed returns closed cases, and both returns either. Set it with claimStatus.

How do I look up a specific claim? Pass its BLM case serial number in serialNumbers, for example NV105216280. The filters are ignored when serial numbers are given.

What does the legal description mean? It is the PLSS aliquot description of the claim's land (meridian, township, range, section, and quarter parts). legalDescriptionParts splits it into individual entries for easier parsing.

A run returned an error record. Why? No claims matched the filter combination (for example a keyword or acreage range with no hits). Loosen the filters. These runs are not charged.

Is this an official BLM tool? No. This actor is independent and is not affiliated with the Bureau of Land Management. It reads only data published in the public MLRS system. Use it in accordance with BLM terms and applicable law.

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Independent tool, not affiliated with the Bureau of Land Management. Accesses only data publicly available in the BLM MLRS system. Use in accordance with BLM terms of use.