# Relationship history for MSHA mine 3608317

Current hierarchy: **Erickson Charles Jr → Patriot Energies → Tuscareka Tipple**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Patriot Energies → Tuscareka Tipple; 1992-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Erickson Charles Jr Et Al → Tuscareka Tipple; 1992-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Erickson Charles Jr Et Al → Patriot Energies; 1992-01-01 to current/open; source msha-controller-operator-history