# Relationship history for MSHA mine 0202520

Current hierarchy: **The Shepherd Family Living Trust; The Lin Irrevocable Trust → Rock Pros USA LLC → Chloride**

- 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:** Paul E  D'Alessio → Chloride; 1987-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Able Earth Extraction Inc → Chloride; 1990-05-01 to 2014-12-16; source msha-controller-operator-history
- **controller_controls_operator:** Paul E  D'Alessio → Able Earth Extraction Inc; 1990-05-01 to 2014-12-16; source msha-controller-operator-history
- **controller_controls_mine:** Paul E  D'Alessio → Chloride; 1999-10-01 to 2023-01-02; source msha-controller-operator-history
- **operator_operates_mine:** Kalamazoo Materials Inc → Chloride; 2014-12-17 to 2025-06-15; source msha-controller-operator-history
- **controller_controls_operator:** Paul E  D'Alessio → Kalamazoo Materials Inc; 2014-12-17 to 2023-01-02; source msha-controller-operator-history
- **controller_controls_mine:** The Lin Irrevocable Trust et al → Chloride; 2019-12-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** The Shepherd Family Living Trust et al → Chloride; 2023-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Shepherd Family Living Trust et al → Kalamazoo Materials Inc; 2023-01-03 to 2025-06-15; source msha-controller-operator-history
- **controller_controls_operator:** The Lin Irrevocable Trust et al → Kalamazoo Materials Inc; 2023-01-03 to 2025-06-15; source msha-controller-operator-history
- **operator_operates_mine:** Rock Pros USA LLC → Chloride; 2025-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Lin Irrevocable Trust et al → Rock Pros USA LLC; 2025-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Shepherd Family Living Trust et al → Rock Pros USA LLC; 2025-06-16 to current/open; source msha-controller-operator-history