# Relationship history for MSHA mine 4405564

Current hierarchy: **Walter F  Steele → Redford Brick Company Inc → Clay Pit Sanston**

- 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:** Redford T C Jr → Clay Pit Sanston; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Redford Brick Company Inc → Clay Pit Sanston; 1980-11-01 to 1984-12-13; source msha-controller-operator-history
- **controller_controls_operator:** Redford T C Jr → Redford Brick Company Inc; 1980-11-01 to 1984-12-13; source msha-controller-operator-history
- **operator_operates_mine:** Redford Brick Company Inc → Clay Pit Sanston; 1984-12-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Walter F  Steele et al → Clay Pit Sanston; 1984-12-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Walter F  Steele et al → Redford Brick Company Inc; 1984-12-14 to current/open; source msha-controller-operator-history