# Relationship history for MSHA mine 4609617

Current hierarchy: **Mohegan Energy Trustees LLC → ONXY ENERGY, LLC → BECKLEY DEEP MINE**

- 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:** Richard G  Preservati II → BECKLEY DEEP MINE; 2008-12-04 to 2018-05-15; source msha-controller-operator-history
- **controller_controls_mine:** Mohegan Energy Trustees LLC → BECKLEY DEEP MINE; 2018-05-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Onxy Energy, LLC → BECKLEY DEEP MINE; 2022-01-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mohegan Energy Trustees LLC → Onxy Energy, LLC; 2022-01-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard G  Preservati II → Onxy Energy, LLC; 2022-01-13 to 2018-05-15; source msha-controller-operator-history