# Relationship history for MSHA mine 0102237

Current hierarchy: **Berkshire Hathaway Inc → Acme Brick Tile & Stone LLC → Maddox  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

- **controller_controls_mine:** Jenkins Brick Company → Maddox  Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Excelsior Brick Company Inc → Maddox  Pit; 1980-07-01 to 1989-06-21; source msha-controller-operator-history
- **controller_controls_mine:** S R  Rhodes → Maddox  Pit; 1980-07-01 to 1989-06-21; source msha-controller-operator-history
- **controller_controls_operator:** S R  Rhodes → Excelsior Brick Company Inc; 1980-07-01 to 1989-06-21; source msha-controller-operator-history
- **operator_operates_mine:** Jenkins Brick Company → Maddox  Pit; 1989-06-22 to 2011-05-14; source msha-controller-operator-history
- **controller_controls_operator:** Jenkins Brick Company → Jenkins Brick Company; 1989-06-22 to 2011-05-14; source msha-controller-operator-history
- **operator_operates_mine:** Acme Brick Tile & Stone LLC → Maddox  Pit; 2011-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Berkshire Hathaway Inc → Maddox  Pit; 2011-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Berkshire Hathaway Inc → Acme Brick Tile & Stone LLC; 2011-05-15 to current/open; source msha-controller-operator-history