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• Organization: Department of the Interior
• Updated: 20210615 | Harvested: July 16, 2025 at 12:58 PM

These are shapefiles and ARC/INFO polygon coverages showing the isopachs of total net coal in beds greater than or equal to 1.2' thick for the B and D coal zones, Deserado coal area, Lower White...

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• Organization: Department of the Interior
• Updated: 20210521 | Harvested: July 16, 2025 at 01:23 PM

Land status and Federal mineral ownership in the Danforth Hills coal field, northwestern Colorado. Polygons that make up the ownership coverage include counties, 7.5' quadrangles, townships,...

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• Organization: Department of the Interior
• Updated: 20250610 | Harvested: September 05, 2025 at 08:16 PM

Karst hydrologic systems are important resources in the state of Tennessee both as drinking water resources and as centers for possible biological diversity. These systems are susceptible to...

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• Organization: Department of the Interior
• Updated: 20210614 | Harvested: July 16, 2025 at 12:59 PM

The USGS Central Region Energy Team assesses oil and gas resources of the United States. The onshore and State water areas of the United States comprise 71 provinces. Within these provinces,...

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