# Relationship history for MSHA mine 4405283

Current hierarchy: **Vasvary Daniel → Regent Mining Inc → Surface 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:** Vasvary Daniel → Surface No 3; 1978-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pasco Coal Company Inc → Surface No 3; 1979-09-01 to 1979-11-25; source msha-controller-operator-history
- **controller_controls_mine:** Powers Freddy → Surface No 3; 1979-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Powers Freddy → Pasco Coal Company Inc; 1979-09-01 to 1979-11-25; source msha-controller-operator-history
- **operator_operates_mine:** Regent Mining Inc → Surface No 3; 1979-11-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vasvary Daniel → Regent Mining Inc; 1979-11-26 to current/open; source msha-controller-operator-history