# Relationship history for MSHA mine 4404498

Current hierarchy: **Bailey Arnold → Bailey Brothers Coal Company Inc → No 1 Mine**

- 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:** Bailey Arnold → No 1 Mine; 1975-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Delta Coal Inc → No 1 Mine; 1976-06-21 to 1978-04-04; source msha-controller-operator-history
- **controller_controls_mine:** Bunn Edwin D → No 1 Mine; 1976-06-21 to 1978-04-04; source msha-controller-operator-history
- **controller_controls_operator:** Bunn Edwin D → Delta Coal Inc; 1976-06-21 to 1978-04-04; source msha-controller-operator-history
- **operator_operates_mine:** Fox Creek Mining Company Inc → No 1 Mine; 1978-04-05 to 1979-09-09; source msha-controller-operator-history
- **controller_controls_mine:** Coy  Taylor et al → No 1 Mine; 1978-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Coy  Taylor et al → Fox Creek Mining Company Inc; 1978-04-05 to 1979-09-09; source msha-controller-operator-history
- **controller_controls_operator:** James  Taylor et al → Fox Creek Mining Company Inc; 1978-04-05 to 1979-09-09; source msha-controller-operator-history
- **operator_operates_mine:** Bailey Brothers Coal Company Inc → No 1 Mine; 1979-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Arnold → Bailey Brothers Coal Company Inc; 1979-09-10 to current/open; source msha-controller-operator-history