# Relationship history for MSHA mine 4607265

Current hierarchy: **Paul K  Moran → Chicopee Coal Company Inc → Omega Preparation 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Bright Coal Corp → Omega Preparation Plant; 1987-03-01 to 1989-12-18; source msha-controller-operator-history
- **controller_controls_mine:** Bright William T → Omega Preparation Plant; 1987-03-01 to 1989-12-18; source msha-controller-operator-history
- **controller_controls_operator:** Bright William T → Bright Coal Corp; 1987-03-01 to 1989-12-18; source msha-controller-operator-history
- **operator_operates_mine:** Vandalia Mining Corp → Omega Preparation Plant; 1989-12-19 to 1993-02-07; source msha-controller-operator-history
- **controller_controls_mine:** MidAmerican Energy Holdings Company → Omega Preparation Plant; 1989-12-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** MidAmerican Energy Holdings Company → Vandalia Mining Corp; 1989-12-19 to 1993-02-07; source msha-controller-operator-history
- **operator_operates_mine:** Clay County Coal Processing Corp → Omega Preparation Plant; 1993-02-08 to 1994-01-13; source msha-controller-operator-history
- **controller_controls_mine:** CLI International Enterprises Corp → Omega Preparation Plant; 1993-02-08 to 1994-01-13; source msha-controller-operator-history
- **controller_controls_operator:** CLI International Enterprises Corp → Clay County Coal Processing Corp; 1993-02-08 to 1994-01-13; source msha-controller-operator-history
- **operator_operates_mine:** Vandalia Resources Inc → Omega Preparation Plant; 1994-01-14 to 1998-04-27; source msha-controller-operator-history
- **controller_controls_mine:** Pittston Company → Omega Preparation Plant; 1994-01-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Vandalia Resources Inc; 1994-01-14 to 1998-04-27; source msha-controller-operator-history
- **operator_operates_mine:** Chicopee Coal Company Inc → Omega Preparation Plant; 1998-04-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Paul K  Moran → Omega Preparation Plant; 1998-04-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul K  Moran → Chicopee Coal Company Inc; 1998-04-28 to current/open; source msha-controller-operator-history