# Relationship history for MSHA mine 3400122

Current hierarchy: **Thys Jay Dee → Ada Brick Products Inc → Ada Brick Pit**

- 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:** Superior Clay Products → Ada Brick Pit; 1950-01-01 to 1981-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Livingston Russell S → Ada Brick Pit; 1950-01-01 to 1981-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Livingston Russell S → Superior Clay Products; 1950-01-01 to 1981-11-08; source msha-controller-operator-history
- **operator_operates_mine:** Superior Clay Products → Ada Brick Pit; 1981-11-09 to 1983-01-23; source msha-controller-operator-history
- **controller_controls_mine:** Sanders Jim → Ada Brick Pit; 1981-11-09 to 1983-01-23; source msha-controller-operator-history
- **controller_controls_operator:** Sanders Jim → Superior Clay Products; 1981-11-09 to 1983-01-23; source msha-controller-operator-history
- **operator_operates_mine:** Ada Brick Products Inc → Ada Brick Pit; 1983-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thys Jay Dee → Ada Brick Pit; 1983-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thys Jay Dee → Ada Brick Products Inc; 1983-01-24 to current/open; source msha-controller-operator-history