# Relationship history for MSHA mine 1518749

Current hierarchy: **Rhino Resource Partners LP → Central Appalachia Mining, LLC → Billy Compton Branch Elkhorn 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:** Wexford Capital LLC → Billy Compton Branch Elkhorn 1; 2003-05-12 to 2010-10-04; source msha-controller-operator-history
- **operator_operates_mine:** Central Appalachia Mining, LLC → Billy Compton Branch Elkhorn 1; 2004-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wexford Capital LLC → Central Appalachia Mining, LLC; 2004-04-23 to 2010-10-04; source msha-controller-operator-history
- **controller_controls_mine:** Rhino Resource Partners LP → Billy Compton Branch Elkhorn 1; 2010-10-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rhino Resource Partners LP → Central Appalachia Mining, LLC; 2010-10-05 to current/open; source msha-controller-operator-history