# Relationship history for MSHA mine 1510437

Current hierarchy: **Hunter Caner → C & H Coal Company Inc → #35**

- 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:** Hunter Caner → #35; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** George  Newsom → #35; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gum Branch Coal Company Inc → #35; 1977-05-01 to 1984-08-08; source msha-controller-operator-history
- **controller_controls_operator:** George  Newsom → Gum Branch Coal Company Inc; 1977-05-01 to 1984-08-08; source msha-controller-operator-history
- **operator_operates_mine:** Gum Branch Coal Company Inc → #35; 1984-08-09 to 1987-12-27; source msha-controller-operator-history
- **controller_controls_mine:** Martin Billy K → #35; 1984-08-09 to 1987-12-27; source msha-controller-operator-history
- **controller_controls_operator:** Martin Billy K → Gum Branch Coal Company Inc; 1984-08-09 to 1987-12-27; source msha-controller-operator-history
- **operator_operates_mine:** C & H Coal Company Inc → #35; 1987-12-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hunter Caner → C & H Coal Company Inc; 1987-12-28 to current/open; source msha-controller-operator-history