# Relationship history for MSHA mine 4105906

Current hierarchy: **Bryan  Barnes → B&S Farms LLC → Comache Ridge Aggregates 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Bryan  Barnes → Comache Ridge Aggregates LLC; 2024-08-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B&S Farms LLC → Comache Ridge Aggregates LLC; 2026-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bryan  Barnes → B&S Farms LLC; 2026-08-01 to current/open; source msha-controller-operator-history