# Relationship history for MSHA mine 1517336

Current hierarchy: **John M  Potter; Thomas A  Potter → Sunny Ridge Mining Company Inc → Mine No 82**

- 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:** Thomas A  Potter et al → Mine No 82; 1987-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Compton Carolyn → Mine No 82; 1989-09-22 to 1994-05-19; source msha-controller-operator-history
- **operator_operates_mine:** C & R Coal Company Inc → Mine No 82; 1992-12-01 to 1993-03-23; source msha-controller-operator-history
- **controller_controls_operator:** Compton Carolyn → C & R Coal Company Inc; 1992-12-01 to 1993-03-23; source msha-controller-operator-history
- **controller_controls_mine:** Carver Bobby → Mine No 82; 1993-03-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Oak Ridge Coal Company Inc → Mine No 82; 1993-03-24 to 1993-08-19; source msha-controller-operator-history
- **controller_controls_operator:** Carver Bobby → Oak Ridge Coal Company Inc; 1993-03-24 to 1993-08-19; source msha-controller-operator-history
- **operator_operates_mine:** Oak Ridge Coal Company Inc → Mine No 82; 1993-08-20 to 1993-09-02; source msha-controller-operator-history
- **controller_controls_mine:** Adkins Clifton → Mine No 82; 1993-08-20 to 1993-09-02; source msha-controller-operator-history
- **controller_controls_operator:** Adkins Clifton → Oak Ridge Coal Company Inc; 1993-08-20 to 1993-09-02; source msha-controller-operator-history
- **controller_controls_mine:** Southers Hershel → Mine No 82; 1993-09-01 to 1995-03-12; source msha-controller-operator-history
- **operator_operates_mine:** Oak Ridge Coal Company Inc → Mine No 82; 1993-09-03 to 1994-05-03; source msha-controller-operator-history
- **controller_controls_operator:** Southers Hershel → Oak Ridge Coal Company Inc; 1993-09-03 to 1994-05-03; source msha-controller-operator-history
- **operator_operates_mine:** Cripple Creek Mining Inc → Mine No 82; 1994-05-04 to 1995-06-20; source msha-controller-operator-history
- **controller_controls_mine:** Daniels Eugene → Mine No 82; 1994-05-04 to 1996-04-21; source msha-controller-operator-history
- **controller_controls_operator:** Daniels Eugene → Cripple Creek Mining Inc; 1994-05-04 to 1995-06-20; source msha-controller-operator-history
- **operator_operates_mine:** Sunny Ridge Mining Company Inc → Mine No 82; 1995-06-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas A  Potter et al → Sunny Ridge Mining Company Inc; 1995-06-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John M  Potter et al → Sunny Ridge Mining Company Inc; 1995-06-21 to current/open; source msha-controller-operator-history