# Relationship history for MSHA mine 2301645

Current hierarchy: **Doyle  Wilkerson; Murl  Wilkerson → Wilkerson Excavating Inc → WILKERSON EXCAVATING INC**

- 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

- **operator_operates_mine:** Wilkerson Excavating Inc → WILKERSON EXCAVATING INC; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Murl  Wilkerson et al → WILKERSON EXCAVATING INC; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Murl  Wilkerson et al → Wilkerson Excavating Inc; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Doyle  Wilkerson et al → Wilkerson Excavating Inc; 1950-01-01 to current/open; source msha-controller-operator-history