# Relationship history for MSHA mine 4202598

Current hierarchy: **Carl  Bowler → Carl Bowler & Sons, LLC → Carl Bowler Quarry**

- 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:** Carl Bowler & Sons, LLC → Carl Bowler Quarry; 2012-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carl  Bowler → Carl Bowler Quarry; 2012-11-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl  Bowler → Carl Bowler & Sons, LLC; 2012-11-19 to current/open; source msha-controller-operator-history