# Relationship history for MSHA mine 2900091

Current hierarchy: **Idzior Stanley → Stanley Idzior → Caranta #3 Ug**

- 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:** Stanley Idzior → Caranta #3 Ug; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Idzior Stanley → Caranta #3 Ug; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Idzior Stanley → Stanley Idzior; 1950-01-01 to current/open; source msha-controller-operator-history