# Relationship history for MSHA mine 1510702

Current hierarchy: **Stiltner John P → Stil-Mc Coal Company Inc → No 3**

- 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

- **controller_controls_mine:** Salyers Larry → No 3; 1977-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** D & M Coals → No 3; 1977-08-01 to 1978-09-15; source msha-controller-operator-history
- **controller_controls_mine:** Conn Waldean & Mike Potter → No 3; 1977-08-01 to 1978-09-15; source msha-controller-operator-history
- **controller_controls_operator:** Conn Waldean & Mike Potter → D & M Coals; 1977-08-01 to 1978-09-15; source msha-controller-operator-history
- **operator_operates_mine:** Ann Vic Coal Company → No 3; 1978-09-16 to 1979-06-17; source msha-controller-operator-history
- **controller_controls_mine:** Bryant Ralph & Darvene Hamilton → No 3; 1978-09-16 to 1979-06-17; source msha-controller-operator-history
- **controller_controls_operator:** Bryant Ralph & Darvene Hamilton → Ann Vic Coal Company; 1978-09-16 to 1979-06-17; source msha-controller-operator-history
- **controller_controls_mine:** Blair Rodney → No 3; 1979-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Big Bass Coal Company → No 3; 1979-06-18 to 1979-12-10; source msha-controller-operator-history
- **controller_controls_operator:** Salyers Larry → Big Bass Coal Company; 1979-06-18 to 1979-12-10; source msha-controller-operator-history
- **operator_operates_mine:** E & R Coal Company Inc → No 3; 1979-12-11 to 1984-04-25; source msha-controller-operator-history
- **controller_controls_operator:** Blair Rodney → E & R Coal Company Inc; 1979-12-11 to 1984-04-25; source msha-controller-operator-history
- **operator_operates_mine:** Black Hole Mining Inc → No 3; 1984-04-26 to 1984-10-15; source msha-controller-operator-history
- **controller_controls_mine:** Shortridge Keaster Et Al → No 3; 1984-04-26 to 1984-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Shortridge Keaster Et Al → Black Hole Mining Inc; 1984-04-26 to 1984-10-15; source msha-controller-operator-history
- **controller_controls_mine:** Stiltner John P → No 3; 1984-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Stil-Mc Coal Company Inc → No 3; 1984-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stiltner John P → Stil-Mc Coal Company Inc; 1984-10-16 to current/open; source msha-controller-operator-history