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MSHA Operator Employment and Production Data Set - Quarterly

Published by Mine Safety and Health Administration | Department of Labor | Catalog Last Checked: April 17, 2026 at 06:07 AM | Dataset Last Updated: March 12, 2026 at 12:27 PM
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 relating to the: (01) Underground; (02) Surface at underground; (03) Strip, quarry, open pit; (04) Auger; (05) Culm bank/refuse pile; (06) Dredge; (12) Other mining; (17) Independent shops or yards; (30) Mill operation/preparation plant; (99) Office workers at mine site.

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