# Relationship history for MSHA mine 4609515

Current hierarchy: **Estate of Harry Clay Boggs; Betty Jean  Boggs → Boggs Natural Gas, FLP → Boggs Rock Quarry #001**

- 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:** Boggs Natural Gas, FLP → Boggs Rock Quarry #001; 2016-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Estate of Harry Clay Boggs et al → Boggs Rock Quarry #001; 2016-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Estate of Harry Clay Boggs et al → Boggs Natural Gas, FLP; 2016-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Betty Jean  Boggs et al → Boggs Natural Gas, FLP; 2016-08-02 to current/open; source msha-controller-operator-history