{"accessLevel": "public", "bureauCode": ["010:04"], "contactPoint": {"@type": "vcard:Contact", "fn": "Bureau of Land Management, blm_mlrs", "hasEmail": "mailto:blm_mlrs@blm.gov"}, "description": "

This dataset contains notice level operations for locatable mineral cases derived from Legal Land Descriptions (LLD) contained in the US Bureau of Land Management's, BLM, Mineral and Land Record System(MLRS) and geocoded (mapped) using the Public Land Survey System (PLSS) derived from the most accurate survey data available through BLM Cadastral Survey workforce. Geospatial representations might be missing for some cases that can not be geocoded using the MLRS algorithm. Locatable minerals include all minerals locatable under the 1872 General Mining Law. This data set contains cases for locatable minerals under notice level operations with the case disposition of 'Authorized' or 'Pending'.

Each case is given a data quality score based on how well it mapped.\u00a0 These can be lumped into seven groups to provide a simplified way to understand the scores.

  • Group 1: Direct PLSS Match. Scores \u201c0\u201d, \u201c1\u201d, \u201c2\u201d, \u201c3\u201d should all have a match to the PLSS data. There are slight differences, but the primary expectation is that these match the PLSS.\u00a0
  • Group 2: Calculated PLSS Match. Scores \u201c4\u201d, \u201c4.1\u201d, \u201c5\u201d, \u201c6\u201d, \u201c7\u201d and \u201c8\u201d were generated through a process of creating the geometry that is not a direct capture from the PLSS. They represent a best guess based on the underlining PLSS\u00a0
  • Group 3 \u2013 Mapped to Section. Score of \u201c8.1\u201d, \u201c8.2\u201d, \u201c8.3\u201d, \u201c9\u201d and \u201c10\u201d are mapped to the Section for various reasons (refer to log information in data quality field).\u00a0
  • Group 4- Combination of mapped and unmapped areas. Score of 15 represents a case that has some portions that would map and others that do not.\u00a0
  • Group 5 \u2013 No NLSDB Geometry, Only Attributes. Scores \u201c11\u201d, \u201c12\u201d, \u201c20\u201d, \u201c21\u201d and \u201c22\u201d do not have a match to the PLSS and no geometry is in the NLSDB, and only attributes exist in the data.\u00a0
  • Group 6 \u2013 Mapped to County. Scores of \u201c25\u201d map to the County.
  • Group 7 \u2013 Improved Geometry. Scores of \u201c100\u201d are cases that have had their geometry edited by BLM staff using ArcGIS Pro or MLRS bulk upload tool.

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