# Relationship history for MSHA mine 4403951

Current hierarchy: **Stiltner Homer & Gary → Sunstar Coal Company → No 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Daddy-O Coal Company → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Daddy-O Coal Company → No 1; 1975-01-01 to 1980-08-06; source msha-controller-operator-history
- **controller_controls_operator:** Daddy-O Coal Company → Daddy-O Coal Company; 1975-01-01 to 1980-08-06; source msha-controller-operator-history
- **operator_operates_mine:** Sunstar Coal Company → No 1; 1980-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stiltner Homer & Gary → No 1; 1980-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stiltner Homer & Gary → Sunstar Coal Company; 1980-08-07 to current/open; source msha-controller-operator-history