# Relationship history for MSHA mine 4609302

Current hierarchy: **Mepco Intermediate Holdings, LLC → Dana Mining Company, LLC → Arco No. 1 Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Dana Mining Company, LLC → Arco No. 1 Mine; 2008-08-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** GenPower Holdings LP  et al → Arco No. 1 Mine; 2008-08-19 to 2013-11-09; source msha-controller-operator-history
- **controller_controls_operator:** GenPower Holdings LP  et al → Dana Mining Company, LLC; 2008-08-19 to 2013-11-09; source msha-controller-operator-history
- **controller_controls_operator:** James L  Laurita Jr  et al → Dana Mining Company, LLC; 2008-08-19 to 2013-11-09; source msha-controller-operator-history
- **controller_controls_mine:** Mepco Intermediate Holdings, LLC → Arco No. 1 Mine; 2013-11-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mepco Intermediate Holdings, LLC → Dana Mining Company, LLC; 2013-11-10 to current/open; source msha-controller-operator-history