# Relationship history for MSHA mine 3503485

Current hierarchy: **Jack  Amen; Nancy  Amen → Cinder Butte Rock Products Llc → CINDER BUTTE ROCK PRO., LLC**

- 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:** Cinder Butte Rock Products Llc → CINDER BUTTE ROCK PRO., LLC; 1999-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jack  Amen  et al → CINDER BUTTE ROCK PRO., LLC; 1999-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jack  Amen  et al → Cinder Butte Rock Products Llc; 1999-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nancy  Amen  et al → Cinder Butte Rock Products Llc; 1999-08-01 to current/open; source msha-controller-operator-history