# Relationship history for MSHA mine 4105826

Current hierarchy: **Moriah TFS Holdings LLC → Thompson Materials → Section 19**

- 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:** Moriah TFS Holdings LLC → Section 19; 2020-02-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Thompson Materials → Section 19; 2025-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Moriah TFS Holdings LLC → Thompson Materials; 2025-10-01 to current/open; source msha-controller-operator-history