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Contains employment and coal production reported by contractors for each quarter in a calendar year, by subunit and mine ID. The subunit code identifies the location or operation of the mine...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 05:54 PM -
Contains the annual summation of employee hours and coal production reported by contractors where the average quarterly employment is greater than zero with grouping by calendar year, subunit code...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 05:54 PM
