# Relationship history for MSHA mine 4606241

Current hierarchy: **Hite Shirley P → H W & C Coal Company Inc → Hw & C #4 Mine**

- 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:** Compton William M → Hw & C #4 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hite Shirley P Et Al → Hw & C #4 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & W Coal Company Inc → Hw & C #4 Mine; 1980-10-01 to 1991-06-16; source msha-controller-operator-history
- **controller_controls_operator:** Compton William M → C & W Coal Company Inc; 1980-10-01 to 1991-06-16; source msha-controller-operator-history
- **operator_operates_mine:** H W & C Coal Company Inc → Hw & C #4 Mine; 1991-06-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hite Shirley P Et Al → H W & C Coal Company Inc; 1991-06-17 to current/open; source msha-controller-operator-history