# Relationship history for MSHA mine 3303907

Current hierarchy: **Charles C  Ungurean → CCU Coal and Construction LLC. → CCU Conesville Wash Plant**

- 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:** Conesville Coal Preparation Company → CCU Conesville Wash Plant; 1982-07-01 to 2013-06-03; source msha-controller-operator-history
- **controller_controls_mine:** American Electric Power Company Inc → CCU Conesville Wash Plant; 1982-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** American Electric Power Company Inc → Conesville Coal Preparation Company; 1982-07-01 to 2013-06-03; source msha-controller-operator-history
- **operator_operates_mine:** Oxford Conesville LLC. → CCU Conesville Wash Plant; 2013-06-04 to 2019-02-10; source msha-controller-operator-history
- **controller_controls_mine:** Charles C  Ungurean → CCU Conesville Wash Plant; 2013-06-04 to 2014-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Charles C  Ungurean → Oxford Conesville LLC.; 2013-06-04 to 2014-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Westmoreland Coal Company → CCU Conesville Wash Plant; 2015-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Westmoreland Coal Company → Oxford Conesville LLC.; 2015-01-01 to 2019-02-10; source msha-controller-operator-history
- **operator_operates_mine:** CCU Coal and Construction LLC. → CCU Conesville Wash Plant; 2019-02-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charles C  Ungurean → CCU Conesville Wash Plant; 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