# Relationship history for MSHA mine 2501317

Current hierarchy: **Tonya  Wolinski; Derek  Wolinski → Legacy Rock N Sand, LLC → Legacy Pit 2**

- 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

- **operator_operates_mine:** Tri-County Land Dozing and Excavation, LLC → Legacy Pit 2; 2021-10-25 to 2025-03-23; source msha-controller-operator-history
- **controller_controls_mine:** Ronald E Stock → Legacy Pit 2; 2021-10-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald E Stock → Tri-County Land Dozing and Excavation, LLC; 2021-10-25 to 2025-03-23; source msha-controller-operator-history
- **operator_operates_mine:** Legacy Rock N Sand, LLC → Legacy Pit 2; 2025-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tonya  Wolinski et al → Legacy Pit 2; 2025-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tonya  Wolinski et al → Legacy Rock N Sand, LLC; 2025-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Derek  Wolinski et al → Legacy Rock N Sand, LLC; 2025-03-24 to current/open; source msha-controller-operator-history