# Relationship history for MSHA mine 2402734

Current hierarchy: **Chippewa Cree Construction Corporation → Centennial Sand and Gravel, LLC → Centennial Sand and Gravel**

- 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:** Genereux Gravel Inc → Centennial Sand and Gravel; 2018-08-27 to 2025-05-18; source msha-controller-operator-history
- **controller_controls_mine:** Roger A  Genereux → Centennial Sand and Gravel; 2018-08-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roger A  Genereux → Genereux Gravel Inc; 2018-08-27 to 2025-05-18; source msha-controller-operator-history
- **operator_operates_mine:** Centennial Sand and Gravel, LLC → Centennial Sand and Gravel; 2025-05-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chippewa Cree Construction Corporation → Centennial Sand and Gravel; 2025-05-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chippewa Cree Construction Corporation → Centennial Sand and Gravel, LLC; 2025-05-19 to current/open; source msha-controller-operator-history