# Relationship history for MSHA mine 1514006

Current hierarchy: **John M  Potter; Thomas A  Potter → Sunny Ridge Mining Company Inc → Job #18**

- 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

- **operator_operates_mine:** Big Oak Coal Corp → Job #18; 1983-04-01 to 1984-06-25; source msha-controller-operator-history
- **controller_controls_mine:** Jackson Ronald & George Kidd → Job #18; 1983-04-01 to 1984-06-25; source msha-controller-operator-history
- **controller_controls_operator:** Jackson Ronald & George Kidd → Big Oak Coal Corp; 1983-04-01 to 1984-06-25; source msha-controller-operator-history
- **operator_operates_mine:** Diamond Coal Company Inc → Job #18; 1984-06-26 to 1988-10-12; source msha-controller-operator-history
- **controller_controls_mine:** Justus Donald Et Al → Job #18; 1984-06-26 to 1988-10-12; source msha-controller-operator-history
- **controller_controls_operator:** Justus Donald Et Al → Diamond Coal Company Inc; 1984-06-26 to 1988-10-12; source msha-controller-operator-history
- **controller_controls_mine:** Thomas A  Potter et al → Job #18; 1987-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Orion Development Corp → Job #18; 1988-10-13 to 1990-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Parsley Ronald Et Al → Job #18; 1988-10-13 to 1990-08-15; source msha-controller-operator-history
- **controller_controls_operator:** Parsley Ronald Et Al → Orion Development Corp; 1988-10-13 to 1990-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Compton Carolyn → Job #18; 1989-09-22 to 1994-05-19; source msha-controller-operator-history
- **operator_operates_mine:** Netely Branch Coal Company Inc → Job #18; 1990-04-23 to 1991-06-24; source msha-controller-operator-history
- **controller_controls_mine:** Scott Danny-Glen Hatfield Et Al → Job #18; 1990-04-23 to 1991-06-24; source msha-controller-operator-history
- **controller_controls_operator:** Scott Danny-Glen Hatfield Et Al → Netely Branch Coal Company Inc; 1990-04-23 to 1991-06-24; source msha-controller-operator-history
- **operator_operates_mine:** Ganna Coal Company Inc → Job #18; 1991-06-25 to 1992-10-27; source msha-controller-operator-history
- **controller_controls_mine:** Mayhorn Les & Steve → Job #18; 1991-06-25 to 1992-10-27; source msha-controller-operator-history
- **controller_controls_operator:** Mayhorn Les & Steve → Ganna Coal Company Inc; 1991-06-25 to 1992-10-27; source msha-controller-operator-history
- **operator_operates_mine:** C & R Coal Company Inc → Job #18; 1992-10-28 to 1994-05-19; source msha-controller-operator-history
- **controller_controls_operator:** Compton Carolyn → C & R Coal Company Inc; 1992-10-28 to 1994-05-19; source msha-controller-operator-history
- **operator_operates_mine:** Dara Coal Company Inc → Job #18; 1994-05-20 to 1994-11-27; source msha-controller-operator-history
- **controller_controls_mine:** Harrison Charles → Job #18; 1994-05-20 to 1994-11-27; source msha-controller-operator-history
- **controller_controls_operator:** Harrison Charles → Dara Coal Company Inc; 1994-05-20 to 1994-11-27; source msha-controller-operator-history
- **operator_operates_mine:** Sunny Ridge Mining Company Inc → Job #18; 1994-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas A  Potter et al → Sunny Ridge Mining Company Inc; 1994-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John M  Potter et al → Sunny Ridge Mining Company Inc; 1994-11-28 to current/open; source msha-controller-operator-history