# Relationship history for MSHA mine 1509757

Current hierarchy: **Darrell  Wagner → Four Aces Mining Inc → #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Gilliam Berto → #2; 1974-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Paramount Drilling Corp → #2; 1976-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gill-Way Fuels Inc → #2; 1976-06-10 to 1978-07-12; source msha-controller-operator-history
- **controller_controls_operator:** Gilliam Berto → Gill-Way Fuels Inc; 1976-06-10 to 1978-07-12; source msha-controller-operator-history
- **operator_operates_mine:** Gill-Way Fuels Inc → #2; 1978-07-13 to 1978-12-27; source msha-controller-operator-history
- **controller_controls_mine:** Florence  King → #2; 1978-07-13 to 1978-12-27; source msha-controller-operator-history
- **controller_controls_operator:** Florence  King → Gill-Way Fuels Inc; 1978-07-13 to 1978-12-27; source msha-controller-operator-history
- **operator_operates_mine:** Zephyr Mining Company → #2; 1978-12-28 to 1980-07-29; source msha-controller-operator-history
- **controller_controls_mine:** William N  Rich → #2; 1978-12-28 to 1980-07-29; source msha-controller-operator-history
- **controller_controls_operator:** William N  Rich → Zephyr Mining Company; 1978-12-28 to 1980-07-29; source msha-controller-operator-history
- **operator_operates_mine:** King Coal Company → #2; 1980-07-30 to 1982-03-01; source msha-controller-operator-history
- **controller_controls_operator:** Paramount Drilling Corp → King Coal Company; 1980-07-30 to 1982-03-01; source msha-controller-operator-history
- **controller_controls_mine:** Lonnie  Strunk → #2; 1982-01-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** V & O Coal Company Inc → #2; 1982-03-02 to 1983-02-07; source msha-controller-operator-history
- **controller_controls_mine:** Vanderpool Isaac → #2; 1982-03-02 to 1983-02-07; source msha-controller-operator-history
- **controller_controls_operator:** Vanderpool Isaac → V & O Coal Company Inc; 1982-03-02 to 1983-02-07; source msha-controller-operator-history
- **operator_operates_mine:** Wan-Crys Coal Company Inc → #2; 1983-02-08 to 1986-05-06; source msha-controller-operator-history
- **controller_controls_operator:** Lonnie  Strunk → Wan-Crys Coal Company Inc; 1983-02-08 to 1986-05-06; source msha-controller-operator-history
- **controller_controls_mine:** Smith Joey → #2; 1983-11-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Darrell  Wagner → #2; 1986-04-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cribb Coal Company → #2; 1986-05-07 to 1986-10-23; source msha-controller-operator-history
- **controller_controls_operator:** Smith Joey → Cribb Coal Company; 1986-05-07 to 1986-10-23; source msha-controller-operator-history
- **operator_operates_mine:** Four Aces Mining Inc → #2; 1986-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darrell  Wagner → Four Aces Mining Inc; 1986-10-24 to current/open; source msha-controller-operator-history