# Relationship history for MSHA mine 4300643

Current hierarchy: **CRH PLC → Pike Industries Inc → Pike Industries Inc-Williamstown**

- 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 → Pike Industries Inc-Williamstown; 1988-06-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pike Industries Inc → Pike Industries Inc-Williamstown; 2006-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Pike Industries Inc; 2006-04-01 to current/open; source msha-controller-operator-history