# Relationship history for MSHA mine 1700603

Current hierarchy: **CRH PLC → Pike Industries Inc → C637-Dover-Foxcroft**

- 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:** Colas S A → C637-Dover-Foxcroft; 1979-12-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → C637-Dover-Foxcroft; 1988-06-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Central Maine Paving Inc → C637-Dover-Foxcroft; 1990-11-01 to 1995-01-18; source msha-controller-operator-history
- **controller_controls_mine:** Stanley  Kitchin → C637-Dover-Foxcroft; 1990-11-01 to 1995-01-18; source msha-controller-operator-history
- **controller_controls_operator:** Stanley  Kitchin → Central Maine Paving Inc; 1990-11-01 to 1995-01-18; source msha-controller-operator-history
- **operator_operates_mine:** Barrett Paving Materials Inc → C637-Dover-Foxcroft; 1995-01-19 to 2004-05-20; source msha-controller-operator-history
- **controller_controls_operator:** Colas S A → Barrett Paving Materials Inc; 1995-01-19 to 2004-05-20; source msha-controller-operator-history
- **operator_operates_mine:** Pike Industries Inc → C637-Dover-Foxcroft; 2004-05-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Pike Industries Inc; 2004-05-21 to current/open; source msha-controller-operator-history