# Relationship history for MSHA mine 2200525

Current hierarchy: **Cook William G Jr → C & F Contracting Company Inc → Pope Wash Plant & Pit**

- 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:** Cother Edward T → Pope Wash Plant & Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & F Contracting Company Inc → Pope Wash Plant & Pit; 1980-09-01 to 1981-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Cother Edward T → C & F Contracting Company Inc; 1980-09-01 to 1981-02-28; source msha-controller-operator-history
- **operator_operates_mine:** C & F Contracting Company Inc → Pope Wash Plant & Pit; 1981-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cook William G Jr → Pope Wash Plant & Pit; 1981-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cook William G Jr → C & F Contracting Company Inc; 1981-03-01 to current/open; source msha-controller-operator-history