# Relationship history for MSHA mine 1514052

Current hierarchy: **Shepherd Bill → S & S Trucking 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

- **operator_operates_mine:** R T C Coal Company → Mine No 2; 1983-05-01 to 1985-10-14; source msha-controller-operator-history
- **controller_controls_mine:** Caudill Reldon Et Al → Mine No 2; 1983-05-01 to 1986-04-27; source msha-controller-operator-history
- **controller_controls_operator:** Caudill Reldon Et Al → R T C Coal Company; 1983-05-01 to 1985-10-14; source msha-controller-operator-history
- **controller_controls_mine:** Blackburn Bobby Jr → Mine No 2; 1984-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lynca Coal Corp → Mine No 2; 1985-10-15 to 1986-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Lyon Southwell → Mine No 2; 1985-10-15 to 1988-11-27; source msha-controller-operator-history
- **controller_controls_operator:** Lyon Southwell → Lynca Coal Corp; 1985-10-15 to 1986-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Clark Tony → Mine No 2; 1986-03-01 to 1991-08-12; source msha-controller-operator-history
- **operator_operates_mine:** Wilderness Coal Inc → Mine No 2; 1986-05-12 to 1987-05-27; source msha-controller-operator-history
- **controller_controls_operator:** Blackburn Bobby Jr → Wilderness Coal Inc; 1986-05-12 to 1987-05-27; source msha-controller-operator-history
- **operator_operates_mine:** Warrior Coal Company → Mine No 2; 1987-05-28 to 1987-08-24; source msha-controller-operator-history
- **controller_controls_mine:** Wellman Ermel-Bennett Et Al → Mine No 2; 1987-05-28 to 1987-08-24; source msha-controller-operator-history
- **controller_controls_operator:** Wellman Ermel-Bennett Et Al → Warrior Coal Company; 1987-05-28 to 1987-08-24; source msha-controller-operator-history
- **operator_operates_mine:** Bulyn Coal Company → Mine No 2; 1987-08-25 to 1988-08-30; source msha-controller-operator-history
- **controller_controls_mine:** Lyon Southwell → Mine No 2; 1987-08-25 to 1988-08-30; source msha-controller-operator-history
- **controller_controls_operator:** Lyon Southwell → Bulyn Coal Company; 1987-08-25 to 1988-08-30; source msha-controller-operator-history
- **operator_operates_mine:** Turkey Creek Coal Company → Mine No 2; 1988-08-31 to 1989-11-05; source msha-controller-operator-history
- **controller_controls_operator:** Clark Tony → Turkey Creek Coal Company; 1988-08-31 to 1989-11-05; source msha-controller-operator-history
- **operator_operates_mine:** Lena Fuel Company Inc → Mine No 2; 1989-11-06 to 1991-04-18; source msha-controller-operator-history
- **controller_controls_mine:** Dunsmore Loy (Loyd) Et Al → Mine No 2; 1989-11-06 to 1991-04-18; source msha-controller-operator-history
- **controller_controls_operator:** Dunsmore Loy (Loyd) Et Al → Lena Fuel Company Inc; 1989-11-06 to 1991-04-18; source msha-controller-operator-history
- **controller_controls_mine:** Shepherd Bill → Mine No 2; 1990-10-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** S & S Trucking Inc → Mine No 2; 1991-04-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shepherd Bill → S & S Trucking Inc; 1991-04-19 to current/open; source msha-controller-operator-history