# Relationship history for MSHA mine 4202693

Current hierarchy: **Rhino Resource Partners LP → Castle Valley Mining LLC → Castle Mine Waste Rock Site**

- 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:** Wexford Capital LLC → Castle Mine Waste Rock Site; 2010-08-25 to 2010-10-04; source msha-controller-operator-history
- **controller_controls_mine:** Rhino Resource Partners LP → Castle Mine Waste Rock Site; 2010-10-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Castle Valley Mining LLC → Castle Mine Waste Rock Site; 2018-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wexford Capital LLC → Castle Valley Mining LLC; 2018-11-15 to 2010-10-04; source msha-controller-operator-history
- **controller_controls_operator:** Rhino Resource Partners LP → Castle Valley Mining LLC; 2018-11-15 to current/open; source msha-controller-operator-history