# Relationship history for MSHA mine 0203037

Current hierarchy: **(James) Leo  Crowley; Val C  Peavy → Sunset Marble Company LLC → Copper Chief**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Sunset Marble Company LLC → Copper Chief; 2004-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Val C  Peavy et al → Copper Chief; 2004-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Val C  Peavy et al → Sunset Marble Company LLC; 2004-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** (James) Leo  Crowley et al → Sunset Marble Company LLC; 2004-03-09 to current/open; source msha-controller-operator-history