# Relationship history for MSHA mine 4607465

Current hierarchy: **Cleveland-Cliffs Inc → Extra Energy Inc → Eckman-Page Strip And Auger**

- 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:** Black Crystal Inc → Eckman-Page Strip And Auger; 1988-02-01 to 1993-06-20; source msha-controller-operator-history
- **controller_controls_mine:** Bowling Bernard → Eckman-Page Strip And Auger; 1988-02-01 to 1993-06-20; source msha-controller-operator-history
- **controller_controls_operator:** Bowling Bernard → Black Crystal Inc; 1988-02-01 to 1993-06-20; source msha-controller-operator-history
- **controller_controls_mine:** Ellis Wayne → Eckman-Page Strip And Auger; 1989-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Steven W  Haynes et al → Eckman-Page Strip And Auger; 1989-11-01 to 2008-09-15; source msha-controller-operator-history
- **operator_operates_mine:** Donnaway Coal Inc → Eckman-Page Strip And Auger; 1993-06-21 to 1994-10-02; source msha-controller-operator-history
- **controller_controls_operator:** Ellis Wayne → Donnaway Coal Inc; 1993-06-21 to 1994-10-02; source msha-controller-operator-history
- **operator_operates_mine:** Extra Energy Inc → Eckman-Page Strip And Auger; 1994-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steven W  Haynes et al → Extra Energy Inc; 1994-10-03 to 2008-09-15; source msha-controller-operator-history
- **controller_controls_mine:** ArcelorMittal → Eckman-Page Strip And Auger; 2008-09-16 to 2020-12-08; source msha-controller-operator-history
- **controller_controls_operator:** ArcelorMittal → Extra Energy Inc; 2008-09-16 to 2020-12-08; source msha-controller-operator-history
- **controller_controls_mine:** Cleveland-Cliffs Inc → Eckman-Page Strip And Auger; 2020-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cleveland-Cliffs Inc → Extra Energy Inc; 2020-12-09 to current/open; source msha-controller-operator-history