# Relationship history for MSHA mine 1508427

Current hierarchy: **George  Newsom → Bruce Branch Coal Company Inc → Bruce Branch #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:** Mousie Coal Corp → Bruce Branch #1; 1975-06-09 to 1980-10-02; source msha-controller-operator-history
- **controller_controls_mine:** Hicks Steve & Irvin → Bruce Branch #1; 1975-06-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hicks Steve & Irvin → Mousie Coal Corp; 1975-06-09 to 1980-10-02; source msha-controller-operator-history
- **operator_operates_mine:** Bruce Branch Coal Company Inc → Bruce Branch #1; 1980-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** George  Newsom → Bruce Branch #1; 1980-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George  Newsom → Bruce Branch Coal Company Inc; 1980-10-03 to current/open; source msha-controller-operator-history