# Relationship history for MSHA mine 1600051

Current hierarchy: **Agustin  Villareal-Budnik → Kentwood Brick & Tile LLC → Greensburg 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Kentwood Brick & Tile Manufacturing Company Inc → Greensburg Pit; 1950-01-01 to 2022-01-03; source msha-controller-operator-history
- **controller_controls_mine:** Don  Clemons → Greensburg Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Don  Clemons → Kentwood Brick & Tile Manufacturing Company Inc; 1950-01-01 to 2022-01-03; source msha-controller-operator-history
- **operator_operates_mine:** Kentwood Brick & Tile LLC → Greensburg Pit; 2022-01-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Agustin  Villareal-Budnik → Greensburg Pit; 2022-01-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Agustin  Villareal-Budnik → Kentwood Brick & Tile LLC; 2022-01-04 to current/open; source msha-controller-operator-history