# Relationship history for MSHA mine 4607668

Current hierarchy: **Lexington Coal Company LLC → LCC West Virginia LLC → Orgas 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

- **controller_controls_mine:** Carl F  Frischkorn → Orgas Mine; 1982-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Battle Ridge Companies → Orgas Mine; 1989-02-01 to 1998-08-20; source msha-controller-operator-history
- **controller_controls_operator:** Carl F  Frischkorn → Battle Ridge Companies; 1989-02-01 to 1998-08-20; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → Orgas Mine; 1998-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C C Coal Company → Orgas Mine; 1998-08-21 to 2004-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → C C Coal Company; 1998-08-21 to 2004-09-30; source msha-controller-operator-history
- **operator_operates_mine:** LCC West Virginia LLC → Orgas Mine; 2004-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lexington Coal Company LLC → Orgas Mine; 2004-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lexington Coal Company LLC → LCC West Virginia LLC; 2004-10-01 to current/open; source msha-controller-operator-history