# Relationship history for MSHA mine 4405113

Current hierarchy: **Adkins Delmar E → V A B Coal Company Inc → No 1 Strip**

- 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:** Regent Mining Inc → No 1 Strip; 1978-09-01 to 1980-06-19; source msha-controller-operator-history
- **controller_controls_mine:** Vasvary Daniel → No 1 Strip; 1978-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vasvary Daniel → Regent Mining Inc; 1978-09-01 to 1980-06-19; source msha-controller-operator-history
- **operator_operates_mine:** V A B Coal Company Inc → No 1 Strip; 1980-06-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Adkins Delmar E → No 1 Strip; 1980-06-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adkins Delmar E → V A B Coal Company Inc; 1980-06-20 to current/open; source msha-controller-operator-history