# Relationship history for MSHA mine 4608458

Current hierarchy: **Lexington Coal Company LLC → LCC West Virginia LLC → Horse Creek Surface Mine No 1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Carl F  Frischkorn → Horse Creek Surface Mine No 1; 1982-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Battle Ridge Companies → Horse Creek Surface Mine No 1; 1994-12-01 to 1998-08-20; source msha-controller-operator-history
- **controller_controls_operator:** Carl F  Frischkorn → Battle Ridge Companies; 1994-12-01 to 1998-08-20; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Natural Resources Incorporated → Horse Creek Surface Mine No 1; 1998-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C C Coal Company → Horse Creek Surface Mine No 1; 1998-08-21 to 2005-01-09; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → C C Coal Company; 1998-08-21 to 2005-01-09; source msha-controller-operator-history
- **controller_controls_mine:** Lexington Coal Company LLC → Horse Creek Surface Mine No 1; 2004-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** LCC West Virginia LLC → Horse Creek Surface Mine No 1; 2005-01-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lexington Coal Company LLC → LCC West Virginia LLC; 2005-01-10 to current/open; source msha-controller-operator-history