# Relationship history for MSHA mine 2200033

Current hierarchy: **Cook Jimmy R → C & G Dirt Hauling → Laurel Brick & Tile**

- 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:** Laurel Brick & Tile Company Inc → Laurel Brick & Tile; 1950-01-01 to 1980-04-16; source msha-controller-operator-history
- **controller_controls_mine:** Schneider Earl Jr → Laurel Brick & Tile; 1950-01-01 to 1980-04-16; source msha-controller-operator-history
- **controller_controls_operator:** Schneider Earl Jr → Laurel Brick & Tile Company Inc; 1950-01-01 to 1980-04-16; source msha-controller-operator-history
- **operator_operates_mine:** Walters Construction → Laurel Brick & Tile; 1980-04-17 to 1985-09-25; source msha-controller-operator-history
- **controller_controls_mine:** Bennis  Walters → Laurel Brick & Tile; 1980-04-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bennis  Walters → Walters Construction; 1980-04-17 to 1985-09-25; source msha-controller-operator-history
- **operator_operates_mine:** C & G Dirt Hauling → Laurel Brick & Tile; 1985-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cook Jimmy R → Laurel Brick & Tile; 1985-09-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cook Jimmy R → C & G Dirt Hauling; 1985-09-26 to current/open; source msha-controller-operator-history