# Relationship history for MSHA mine 4003088

Current hierarchy: **Horizon Natural Resources Incorporated → Addington Enterprises Inc → Buffalo Mountain**

- 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:** Horizon Natural Resources Incorporated → Buffalo Mountain; 1988-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Doug D  Moore → Buffalo Mountain; 1995-06-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tennessee Mining Inc → Buffalo Mountain; 1995-09-01 to 1995-11-02; source msha-controller-operator-history
- **controller_controls_operator:** Doug D  Moore → Tennessee Mining Inc; 1995-09-01 to 1995-11-02; source msha-controller-operator-history
- **operator_operates_mine:** Addington Enterprises Inc → Buffalo Mountain; 1995-11-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Natural Resources Incorporated → Addington Enterprises Inc; 1995-11-03 to current/open; source msha-controller-operator-history