# Relationship history for MSHA mine 2602533

Current hierarchy: **Elizabeth M  Smith; Ira J  Smith → Desert Deco Rock Inc → Copper Rose**

- 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:** Crescent Peak Quarries LLC → Copper Rose; 2004-04-01 to 2014-03-16; source msha-controller-operator-history
- **controller_controls_mine:** Elizabeth M  Smith  et al → Copper Rose; 2004-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elizabeth M  Smith  et al → Crescent Peak Quarries LLC; 2004-04-01 to 2014-03-16; source msha-controller-operator-history
- **controller_controls_operator:** Ira J  Smith  et al → Crescent Peak Quarries LLC; 2004-04-01 to 2014-03-16; source msha-controller-operator-history
- **operator_operates_mine:** Desert Deco Rock Inc → Copper Rose; 2014-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ira J  Smith  et al → Copper Rose; 2014-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ira J  Smith  et al → Desert Deco Rock Inc; 2014-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elizabeth M  Smith  et al → Desert Deco Rock Inc; 2014-03-17 to current/open; source msha-controller-operator-history