# Relationship history for MSHA mine 0203424

Current hierarchy: **The Shepherd Family Living Trust; The Lin Irrevocable Trust → Rock Pros USA, LLC → Track #1**

- 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:** The Lin Irrevocable Trust et al → Track #1; 2019-12-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rock Pros USA, LLC → Track #1; 2020-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Lin Irrevocable Trust et al → Rock Pros USA, LLC; 2020-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Shepherd Family Living Trust et al → Rock Pros USA, LLC; 2020-01-29 to current/open; source msha-controller-operator-history