# Relationship history for MSHA mine 1519249

Current hierarchy: **Rhino Resource Partners LP → CAM Mining LLC → Dorton E 3**

- 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:** Wexford Capital LLC → Dorton E 3; 2003-05-12 to 2010-10-04; source msha-controller-operator-history
- **operator_operates_mine:** CAM Mining LLC → Dorton E 3; 2008-06-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wexford Capital LLC → CAM Mining LLC; 2008-06-18 to 2010-10-04; source msha-controller-operator-history
- **controller_controls_mine:** Rhino Resource Partners LP → Dorton E 3; 2010-10-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rhino Resource Partners LP → CAM Mining LLC; 2010-10-05 to current/open; source msha-controller-operator-history