# Relationship history for MSHA mine 3301994

Current hierarchy: **Cargill Inc → Cargill Deicing Solutions → Cargill Deicing Solutions-Cleveland Mn**

- 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:** Cargill Inc → Cargill Deicing Solutions-Cleveland Mn; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Akzo Nobel Salt Inc → Cargill Deicing Solutions-Cleveland Mn; 1950-01-01 to 1997-04-25; source msha-controller-operator-history
- **controller_controls_mine:** Akzo Nobel N V → Cargill Deicing Solutions-Cleveland Mn; 1950-01-01 to 1997-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Akzo Nobel N V → Akzo Nobel Salt Inc; 1950-01-01 to 1997-04-25; source msha-controller-operator-history
- **operator_operates_mine:** Cargill Salt → Cargill Deicing Solutions-Cleveland Mn; 1997-04-26 to 2003-06-01; source msha-controller-operator-history
- **controller_controls_operator:** Cargill Inc → Cargill Salt; 1997-04-26 to 2003-06-01; source msha-controller-operator-history
- **operator_operates_mine:** Cargill Deicing Solutions → Cargill Deicing Solutions-Cleveland Mn; 2003-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cargill Inc → Cargill Deicing Solutions; 2003-06-02 to current/open; source msha-controller-operator-history