# Relationship history for MSHA mine 4405376

Current hierarchy: **Owens Jack → H & T Coal Company Inc → 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:** Owens Jack → No 3; 1977-10-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** H & T Coal Company Inc → No 3; 1980-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Owens Jack → H & T Coal Company Inc; 1980-02-01 to current/open; source msha-controller-operator-history