# Relationship history for MSHA mine 4402927

Current hierarchy: **United Virginia Bank/C & M Trust → United Virginia Bank/C & M Trust → Wolftrap Road Pit 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** C A Barrs Contractor Inc → Wolftrap Road Pit No 1; 1950-01-01 to 1978-09-15; source msha-controller-operator-history
- **controller_controls_mine:** Barrs C A Contractor Inc → Wolftrap Road Pit No 1; 1950-01-01 to 1978-09-15; source msha-controller-operator-history
- **controller_controls_operator:** Barrs C A Contractor Inc → C A Barrs Contractor Inc; 1950-01-01 to 1978-09-15; source msha-controller-operator-history
- **operator_operates_mine:** United Virginia Bank/C & M Trust → Wolftrap Road Pit No 1; 1978-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** United Virginia Bank/C & M Trust → Wolftrap Road Pit No 1; 1978-09-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** United Virginia Bank/C & M Trust → United Virginia Bank/C & M Trust; 1978-09-16 to current/open; source msha-controller-operator-history