# Relationship history for MSHA mine 4609098

Current hierarchy: **Xinergy Ltd → Brier Creek Coal Co. LLC → Brier Creek No 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Penn Virginia Corp → Brier Creek No 2; 2001-12-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Loadout, LLC → Brier Creek No 2; 2005-05-03 to 2011-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Penn Virginia Corp → Loadout, LLC; 2005-05-03 to 2011-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Xinergy Ltd → Brier Creek No 2; 2011-03-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brier Creek Coal Co. LLC → Brier Creek No 2; 2011-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Xinergy Ltd → Brier Creek Coal Co. LLC; 2011-05-09 to current/open; source msha-controller-operator-history