# Relationship history for MSHA mine 3003662

Current hierarchy: **Burton Scott Clark → Clark Companies → COMMANDER 510 II SERIAL #5703655**

- 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

- **controller_controls_mine:** Burton Scott Clark → COMMANDER 510 II SERIAL #5703655; 1980-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Clark Companies → COMMANDER 510 II SERIAL #5703655; 2009-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Burton Scott Clark → Clark Companies; 2009-03-02 to current/open; source msha-controller-operator-history