# Relationship history for MSHA mine 4605039

Current hierarchy: **Carneal William L → Carneal Coal Company → Mine No 4**

- 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:** Carneal William L → Mine No 4; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carneal Coal Company → Mine No 4; 1976-02-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carneal William L → Carneal Coal Company; 1976-02-20 to current/open; source msha-controller-operator-history