# Relationship history for MSHA mine 0102543

Current hierarchy: **Yancey Charles → Yancey & Yancey Inc → Dekalb 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Yancey Charles → Dekalb No 3; 1975-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Yancey & Yancey Inc → Dekalb No 3; 1983-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Yancey Charles → Yancey & Yancey Inc; 1983-02-01 to current/open; source msha-controller-operator-history