# Relationship history for MSHA mine 4105746

Current hierarchy: **George Truett Beard III → True Sand and Gravel LLC → True Materials**

- 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:** True Sand and Gravel LLC → True Materials; 2024-04-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** George Truett Beard III → True Materials; 2024-04-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George Truett Beard III → True Sand and Gravel LLC; 2024-04-14 to current/open; source msha-controller-operator-history