# Relationship history for MSHA mine 2602546

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

- 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 → Nipton; 1999-10-01 to 2023-01-02; source msha-controller-operator-history
- **operator_operates_mine:** Excavating and Lowboy Services LLC → Nipton; 2004-09-20 to 2005-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Erla  Serritella → Nipton; 2004-09-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Erla  Serritella → Excavating and Lowboy Services LLC; 2004-09-20 to 2005-07-26; source msha-controller-operator-history
- **operator_operates_mine:** Southwest Granite Wholesalers Inc → Nipton; 2005-07-27 to 2014-12-16; source msha-controller-operator-history
- **controller_controls_mine:** Paul E  D'Alessio → Nipton; 2005-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul E  D'Alessio → Southwest Granite Wholesalers Inc; 2005-07-27 to 2014-12-16; source msha-controller-operator-history
- **operator_operates_mine:** Kalamazoo Materials Inc → Nipton; 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 → Nipton; 2019-12-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** The Shepherd Family Living Trust et al → Nipton; 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 → Nipton; 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