# Relationship history for MSHA mine 4606436

Current hierarchy: **Bean F R Jr → Cedar Bend Coal Company Inc → No 1 Surface**

- 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:** W & E Logging & Coal Company → No 1 Surface; 1981-10-01 to 1982-08-26; source msha-controller-operator-history
- **controller_controls_mine:** Adkins Walter → No 1 Surface; 1981-10-01 to 1985-03-24; source msha-controller-operator-history
- **controller_controls_operator:** Adkins Walter → W & E Logging & Coal Company; 1981-10-01 to 1982-08-26; source msha-controller-operator-history
- **operator_operates_mine:** Robert A Cherry Inc → No 1 Surface; 1982-08-27 to 1984-03-11; source msha-controller-operator-history
- **controller_controls_mine:** Cherry Robert A → No 1 Surface; 1982-08-27 to 1984-03-11; source msha-controller-operator-history
- **controller_controls_operator:** Cherry Robert A → Robert A Cherry Inc; 1982-08-27 to 1984-03-11; source msha-controller-operator-history
- **operator_operates_mine:** Cedar Bend Coal Company Inc → No 1 Surface; 1984-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bean F R Jr → No 1 Surface; 1984-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bean F R Jr → Cedar Bend Coal Company Inc; 1984-03-12 to current/open; source msha-controller-operator-history