# Relationship history for MSHA mine 4402292

Current hierarchy: **Gentry Joe → Gentry Construction Company Inc → No 2 Auger Mine**

- 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:** Gentry Construction Company Inc → No 2 Auger Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gentry Joe → No 2 Auger Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gentry Joe → Gentry Construction Company Inc; 1950-01-01 to current/open; source msha-controller-operator-history