# Relationship history for MSHA mine 4606929

Current hierarchy: **Hite Shirley P → H W & C Coal Company Inc → Hw&C Mine No 3**

- 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:** Compton William M → Hw&C Mine No 3; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hite Shirley P Et Al → Hw&C Mine No 3; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & W Coal Company Inc → Hw&C Mine No 3; 1985-05-01 to 1988-04-21; source msha-controller-operator-history
- **controller_controls_operator:** Compton William M → C & W Coal Company Inc; 1985-05-01 to 1988-04-21; source msha-controller-operator-history
- **operator_operates_mine:** H W & C Coal Company Inc → Hw&C Mine No 3; 1988-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hite Shirley P Et Al → H W & C Coal Company Inc; 1988-04-22 to current/open; source msha-controller-operator-history