# Relationship history for MSHA mine 4605507

Current hierarchy: **Bean F R Jr → Cedar Bend Coal Company Inc → Cedar Bend Page Loadout**

- 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

- **controller_controls_mine:** T W Oil Inc → Cedar Bend Page Loadout; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hawley Charbon → Cedar Bend Page Loadout; 1974-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Imperial Coal & Construction Company Inc → Cedar Bend Page Loadout; 1977-05-01 to 1980-05-13; source msha-controller-operator-history
- **controller_controls_operator:** T W Oil Inc → Imperial Coal & Construction Company Inc; 1977-05-01 to 1980-05-13; source msha-controller-operator-history
- **operator_operates_mine:** Hawley Coal Mining Corp → Cedar Bend Page Loadout; 1980-05-14 to 1984-10-01; source msha-controller-operator-history
- **controller_controls_operator:** Hawley Charbon → Hawley Coal Mining Corp; 1980-05-14 to 1984-10-01; source msha-controller-operator-history
- **controller_controls_mine:** Bean F R Jr → Cedar Bend Page Loadout; 1984-03-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cedar Bend Coal Company Inc → Cedar Bend Page Loadout; 1984-10-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bean F R Jr → Cedar Bend Coal Company Inc; 1984-10-02 to current/open; source msha-controller-operator-history