# Relationship history for MSHA mine 2103399

Current hierarchy: **Central Specialties, Inc. → Central Specialties Inc → Cedar Rapids Shaker - 577**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Joe  Minnerath et al → Cedar Rapids Shaker - 577; 1997-04-01 to 2021-01-05; source msha-controller-operator-history
- **operator_operates_mine:** Central Specialties Inc → Cedar Rapids Shaker - 577; 2003-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Minnerath et al → Central Specialties Inc; 2003-11-05 to 2021-01-05; source msha-controller-operator-history
- **controller_controls_mine:** Allan  Minnerath → Cedar Rapids Shaker - 577; 2021-01-06 to 2024-01-01; source msha-controller-operator-history
- **controller_controls_operator:** Allan  Minnerath → Central Specialties Inc; 2021-01-06 to 2024-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Central Specialties, Inc. → Cedar Rapids Shaker - 577; 2024-01-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Central Specialties, Inc. → Central Specialties Inc; 2024-01-02 to current/open; source msha-controller-operator-history