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Mines and mineral resources -- Databases

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View Resource National Coal Resources Data System

The National Coal Resources Data System is an online database of analytical data, sample locations, descriptive information, analytical methods, sampling techniques, and bibliographic references for selected US coal samples provided by the USGS. Users are guided through several steps that include choosing the type of report to be generated, specifying sample search criteria, and whether to display...

https://www.usgs.gov/energy-and-minerals/energy-resources-pr...