Description
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.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| MSHA Mine Data Retrieval System | Unknown | Open resource |