# Relationship history for MSHA mine 1302503

Current hierarchy: **CRH PLC → Hallett Materials → Booneville West Plant**

- 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:** CRH PLC → Booneville West Plant; 2008-01-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hallett Materials → Booneville West Plant; 2020-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Hallett Materials; 2020-11-19 to current/open; source msha-controller-operator-history