# Relationship history for MSHA mine 4608362

Current hierarchy: **Bobby J  Cole → Southern Edge Inc → Mine No 2**

- 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:** William G  Skewes → Mine No 2; 1988-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Southern Edge Inc → Mine No 2; 1993-11-01 to 1995-08-06; source msha-controller-operator-history
- **controller_controls_operator:** William G  Skewes → Southern Edge Inc; 1993-11-01 to 1995-08-06; source msha-controller-operator-history
- **operator_operates_mine:** Southern Edge Inc → Mine No 2; 1995-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bobby J  Cole → Mine No 2; 1995-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bobby J  Cole → Southern Edge Inc; 1995-08-07 to current/open; source msha-controller-operator-history