# Relationship history for MSHA mine 4607898

Current hierarchy: **CONSOL Energy Inc → Terry Eagle Coal Company Llc → Harrison 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:** Barnett Raymond → Harrison Mine No 1; 1985-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Amvest Corporation → Harrison Mine No 1; 1988-04-01 to 2007-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Terry Eagle Coal Company Llc → Harrison Mine No 1; 1990-06-01 to 1990-12-09; source msha-controller-operator-history
- **controller_controls_operator:** Amvest Corporation → Terry Eagle Coal Company Llc; 1990-06-01 to 1990-12-09; source msha-controller-operator-history
- **operator_operates_mine:** Buttons Coal Company Inc → Harrison Mine No 1; 1990-12-10 to 1994-01-02; source msha-controller-operator-history
- **controller_controls_operator:** Barnett Raymond → Buttons Coal Company Inc; 1990-12-10 to 1994-01-02; source msha-controller-operator-history
- **operator_operates_mine:** Terry Eagle Coal Company Llc → Harrison Mine No 1; 1994-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amvest Corporation → Terry Eagle Coal Company Llc; 1994-01-03 to 2007-07-31; source msha-controller-operator-history
- **controller_controls_mine:** CONSOL Energy Inc → Harrison Mine No 1; 2007-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CONSOL Energy Inc → Terry Eagle Coal Company Llc; 2007-08-01 to 1990-12-09; source msha-controller-operator-history
- **controller_controls_operator:** CONSOL Energy Inc → Terry Eagle Coal Company Llc; 2007-08-01 to current/open; source msha-controller-operator-history