# Relationship history for MSHA mine 4607421

Current hierarchy: **CONSOL Energy Inc → Terry Eagle Coal Company Llc → Otter Creek Mine #1 (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 → Otter Creek Mine #1 (1); 1985-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Buttons Coal Company Inc → Otter Creek Mine #1 (1); 1987-12-01 to 1994-01-02; source msha-controller-operator-history
- **controller_controls_operator:** Barnett Raymond → Buttons Coal Company Inc; 1987-12-01 to 1994-01-02; source msha-controller-operator-history
- **controller_controls_mine:** Amvest Corporation → Otter Creek Mine #1 (1); 1988-04-01 to 2007-07-31; source msha-controller-operator-history
- **controller_controls_mine:** B Douglas  Divita → Otter Creek Mine #1 (1); 1991-01-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Terry Eagle Coal Company Llc → Otter Creek Mine #1 (1); 1994-01-03 to 1994-05-22; source msha-controller-operator-history
- **controller_controls_operator:** Amvest Corporation → Terry Eagle Coal Company Llc; 1994-01-03 to 1994-05-22; source msha-controller-operator-history
- **operator_operates_mine:** Divita Coal Company Inc → Otter Creek Mine #1 (1); 1994-05-23 to 1994-09-19; source msha-controller-operator-history
- **controller_controls_operator:** B Douglas  Divita → Divita Coal Company Inc; 1994-05-23 to 1994-09-19; source msha-controller-operator-history
- **operator_operates_mine:** Terry Eagle Coal Company Llc → Otter Creek Mine #1 (1); 1994-09-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amvest Corporation → Terry Eagle Coal Company Llc; 1994-09-20 to 2007-07-31; source msha-controller-operator-history
- **controller_controls_mine:** CONSOL Energy Inc → Otter Creek Mine #1 (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 1994-05-22; 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