# Relationship history for MSHA mine 4606382

Current hierarchy: **William G  Skewes → Murphy'S Branch Inc → Mine No 4 (1)**

- 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

- **operator_operates_mine:** Navaro Mining Inc → Mine No 4 (1); 1981-08-01 to 1996-01-18; source msha-controller-operator-history
- **controller_controls_mine:** William G  Skewes → Mine No 4 (1); 1981-08-01 to 1996-01-18; source msha-controller-operator-history
- **controller_controls_operator:** William G  Skewes → Navaro Mining Inc; 1981-08-01 to 1996-01-18; source msha-controller-operator-history
- **controller_controls_mine:** William G  Skewes → Mine No 4 (1); 1988-10-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Terry  Cline → Mine No 4 (1); 1995-10-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Navaro Mining Inc → Mine No 4 (1); 1996-01-19 to 1997-01-19; source msha-controller-operator-history
- **controller_controls_mine:** Monk Arlie H (Rusty) Ii → Mine No 4 (1); 1996-01-19 to 1997-01-19; source msha-controller-operator-history
- **controller_controls_operator:** Monk Arlie H (Rusty) Ii → Navaro Mining Inc; 1996-01-19 to 1997-01-19; source msha-controller-operator-history
- **operator_operates_mine:** Cline Excavation Corp → Mine No 4 (1); 1997-01-20 to 1998-03-01; source msha-controller-operator-history
- **controller_controls_operator:** Terry  Cline → Cline Excavation Corp; 1997-01-20 to 1998-03-01; source msha-controller-operator-history
- **operator_operates_mine:** Murphy'S Branch Inc → Mine No 4 (1); 1998-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William G  Skewes → Murphy'S Branch Inc; 1998-03-02 to current/open; source msha-controller-operator-history