# Relationship history for MSHA mine 4606141

Current hierarchy: **Hite Shirley P → H W & C Coal Company Inc → H W & C #2 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 → H W & C #2 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hite Shirley P Et Al → H W & C #2 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & W Coal Company Inc → H W & C #2 Mine; 1980-03-01 to 1985-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Compton William M → C & W Coal Company Inc; 1980-03-01 to 1985-08-14; source msha-controller-operator-history
- **operator_operates_mine:** H W & C Coal Company Inc → H W & C #2 Mine; 1985-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hite Shirley P Et Al → H W & C Coal Company Inc; 1985-08-15 to current/open; source msha-controller-operator-history