# Relationship history for MSHA mine 4105810

Current hierarchy: **Lon G Berndt → Clarksville Gravel, LLC → Clarksville Gravel, LLC**

- 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:** Clarksville Gravel, LLC → Clarksville Gravel, LLC; 2025-07-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lon G Berndt → Clarksville Gravel, LLC; 2025-07-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lon G Berndt → Clarksville Gravel, LLC; 2025-07-09 to current/open; source msha-controller-operator-history