# Relationship history for MSHA mine 4400285

Current hierarchy: **Ervin  Stiltner → Regent Allied Carbon Energy Inc → 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

- **operator_operates_mine:** Old Ben Coal Company → No 1; 1950-01-01 to 1977-09-18; source msha-controller-operator-history
- **controller_controls_mine:** British Petroleum Company PLC → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** British Petroleum Company PLC → Old Ben Coal Company; 1950-01-01 to 1977-09-18; source msha-controller-operator-history
- **operator_operates_mine:** Flat Gap Mining Company Inc → No 1; 1977-09-19 to 1981-10-28; source msha-controller-operator-history
- **controller_controls_mine:** Hurshel  Bowers et al → No 1; 1977-09-19 to 1981-11-02; source msha-controller-operator-history
- **controller_controls_operator:** Hurshel  Bowers et al → Flat Gap Mining Company Inc; 1977-09-19 to 1981-10-28; source msha-controller-operator-history
- **operator_operates_mine:** Sturgill Mining Company → No 1; 1981-10-29 to 1985-09-17; source msha-controller-operator-history
- **controller_controls_mine:** Delbert R  Sturgill → No 1; 1981-10-29 to 1985-09-17; source msha-controller-operator-history
- **controller_controls_operator:** Delbert R  Sturgill → Sturgill Mining Company; 1981-10-29 to 1985-09-17; source msha-controller-operator-history
- **operator_operates_mine:** Metro Coal Company Inc → No 1; 1985-09-18 to 1994-09-25; source msha-controller-operator-history
- **controller_controls_mine:** Malcom  Gatt → No 1; 1985-09-18 to 1994-09-25; source msha-controller-operator-history
- **controller_controls_operator:** Malcom  Gatt → Metro Coal Company Inc; 1985-09-18 to 1994-09-25; source msha-controller-operator-history
- **operator_operates_mine:** Regent Allied Carbon Energy Inc → No 1; 1994-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ervin  Stiltner → No 1; 1994-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ervin  Stiltner → Regent Allied Carbon Energy Inc; 1994-09-26 to current/open; source msha-controller-operator-history