# Relationship history for MSHA mine 4406862

Current hierarchy: **Theodore  Yates → Har-Lee Coal Company Inc → No 9**

- 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

- **controller_controls_mine:** Ricky L  Owens → No 9; 1982-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Theodore  Yates et al → No 9; 1989-02-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Four-O-Mining Company Inc → No 9; 1996-12-01 to 1997-04-28; source msha-controller-operator-history
- **controller_controls_operator:** Ricky L  Owens → Four-O-Mining Company Inc; 1996-12-01 to 1997-04-28; source msha-controller-operator-history
- **operator_operates_mine:** Bethlehem Coal Corp → No 9; 1997-04-29 to 1998-04-01; source msha-controller-operator-history
- **controller_controls_mine:** John Madison  Potter et al → No 9; 1997-04-29 to 1998-04-01; source msha-controller-operator-history
- **controller_controls_operator:** John Madison  Potter et al → Bethlehem Coal Corp; 1997-04-29 to 1998-04-01; source msha-controller-operator-history
- **operator_operates_mine:** Har-Lee Coal Company Inc → No 9; 1998-04-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Theodore  Yates et al → Har-Lee Coal Company Inc; 1998-04-02 to current/open; source msha-controller-operator-history