# Relationship history for MSHA mine 0400297

Current hierarchy: **Darron  Epperson → Big Gun Mining → BIG GUN MINING**

- 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

- **operator_operates_mine:** Union Granite Company Inc → BIG GUN MINING; 1950-01-01 to 1983-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Gino  Scopesi → BIG GUN MINING; 1950-01-01 to 1983-07-10; source msha-controller-operator-history
- **controller_controls_operator:** Gino  Scopesi → Union Granite Company Inc; 1950-01-01 to 1983-07-10; source msha-controller-operator-history
- **operator_operates_mine:** Union Granite Inc → BIG GUN MINING; 1983-07-11 to 2000-02-21; source msha-controller-operator-history
- **controller_controls_mine:** D W  Epperson → BIG GUN MINING; 1983-07-11 to 2000-02-21; source msha-controller-operator-history
- **controller_controls_operator:** D W  Epperson → Union Granite Inc; 1983-07-11 to 2000-02-21; source msha-controller-operator-history
- **operator_operates_mine:** Big Gun Mining → BIG GUN MINING; 2000-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Darron  Epperson → BIG GUN MINING; 2000-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Darron  Epperson → Big Gun Mining; 2000-02-22 to current/open; source msha-controller-operator-history