# Relationship history for MSHA mine 1518134

Current hierarchy: **Charles C  Ungurean → CCU Coal and Construction LLC. → CCU Halls Creek 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Schoate Mining Company LLC → CCU Halls Creek Mine; 1999-01-01 to 2009-09-30; source msha-controller-operator-history
- **controller_controls_mine:** P Ron  Siler → CCU Halls Creek Mine; 1999-01-01 to 2006-06-07; source msha-controller-operator-history
- **controller_controls_operator:** P Ron  Siler → Schoate Mining Company LLC; 1999-01-01 to 2006-06-07; source msha-controller-operator-history
- **controller_controls_mine:** Phoenix Coal Corporation → CCU Halls Creek Mine; 2006-06-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phoenix Coal Corporation → Schoate Mining Company LLC; 2006-06-08 to 2009-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Oxford Mining Company-Kentucky, LLC → CCU Halls Creek Mine; 2009-10-01 to 2019-02-10; source msha-controller-operator-history
- **controller_controls_mine:** Charles C  Ungurean → CCU Halls Creek Mine; 2009-10-01 to 2014-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Charles C  Ungurean → Oxford Mining Company-Kentucky, LLC; 2009-10-01 to 2014-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Westmoreland Coal Company → CCU Halls Creek Mine; 2015-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Westmoreland Coal Company → Oxford Mining Company-Kentucky, LLC; 2015-01-01 to 2019-02-10; source msha-controller-operator-history
- **operator_operates_mine:** CCU Coal and Construction LLC. → CCU Halls Creek Mine; 2019-02-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charles C  Ungurean → CCU Halls Creek Mine; 2019-02-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles C  Ungurean → CCU Coal and Construction LLC.; 2019-02-11 to current/open; source msha-controller-operator-history