# Relationship history for MSHA mine 1517587

Current hierarchy: **Patriot Coal Corporation → Ohio County Coal Company LLC → Freedom**

- 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:** #9 Seam Inc → Freedom; 1994-08-01 to 1994-12-06; source msha-controller-operator-history
- **controller_controls_mine:** Albert F  Robinson → Freedom; 1994-08-01 to 1994-12-06; source msha-controller-operator-history
- **controller_controls_operator:** Albert F  Robinson → #9 Seam Inc; 1994-08-01 to 1994-12-06; source msha-controller-operator-history
- **operator_operates_mine:** Ohio County Coal Company Inc → Freedom; 1994-12-07 to 1995-06-21; source msha-controller-operator-history
- **controller_controls_mine:** Billy  Hargis → Freedom; 1994-12-07 to 1995-06-21; source msha-controller-operator-history
- **controller_controls_operator:** Billy  Hargis → Ohio County Coal Company Inc; 1994-12-07 to 1995-06-21; source msha-controller-operator-history
- **operator_operates_mine:** Ohio County Coal Company → Freedom; 1995-06-22 to 2007-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → Freedom; 1995-06-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Ohio County Coal Company; 1995-06-22 to 2007-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Ohio County Coal Company LLC → Freedom; 2007-01-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → Freedom; 2007-01-17 to 2007-10-30; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Ohio County Coal Company LLC; 2007-01-17 to 2007-10-30; source msha-controller-operator-history
- **controller_controls_mine:** Patriot Coal Corporation → Freedom; 2007-10-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patriot Coal Corporation → Ohio County Coal Company LLC; 2007-10-31 to current/open; source msha-controller-operator-history