# Relationship history for MSHA mine 4606906

Current hierarchy: **Frazier Robert B → Kris Energy Inc → Mine No 2**

- 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:** Larry  Phillips → Mine No 2; 1984-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rex  Fought → Mine No 2; 1984-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tim Rex Mining → Mine No 2; 1985-03-01 to 1987-08-21; source msha-controller-operator-history
- **controller_controls_operator:** Rex  Fought → Tim Rex Mining; 1985-03-01 to 1987-08-21; source msha-controller-operator-history
- **operator_operates_mine:** Village Energies Inc → Mine No 2; 1987-08-22 to 1989-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Dorse  Hatfield → Mine No 2; 1987-08-22 to 1989-09-11; source msha-controller-operator-history
- **controller_controls_operator:** Dorse  Hatfield → Village Energies Inc; 1987-08-22 to 1989-09-11; source msha-controller-operator-history
- **operator_operates_mine:** Shine Coal Company Inc → Mine No 2; 1989-09-12 to 1991-01-13; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Phillips → Shine Coal Company Inc; 1989-09-12 to 1991-01-13; source msha-controller-operator-history
- **controller_controls_mine:** Frazier Robert B → Mine No 2; 1989-09-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kris Energy Inc → Mine No 2; 1991-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frazier Robert B → Kris Energy Inc; 1991-01-14 to current/open; source msha-controller-operator-history