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Contains the annual summation of employee hours and coal production reported by mine operators where the average quarterly employment is greater than zero with grouping by calendar year, subunit...
Search relevance: 1.00 | Views last month: 9 | Catalog Last Checked: April 17, 2026 at 06:07 AM -
Contains employment and coal production reported by mine operators 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: 9 | Catalog Last Checked: April 17, 2026 at 06:07 AM
