# Relationship history for MSHA mine 0203028

Current hierarchy: **Nancy Elise  Combs → Silver State Transportation → Diamond Rebel Red 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

- **controller_controls_mine:** Nancy Elise  Combs → Diamond Rebel Red Mine; 2002-06-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Silver State Transportation → Diamond Rebel Red Mine; 2003-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nancy Elise  Combs → Silver State Transportation; 2003-11-28 to current/open; source msha-controller-operator-history