# Relationship history for MSHA mine 4105678

Current hierarchy: **Moriah TFS Holdings LLC → MORIAH TFS OPERATIONS LLC dba Thompson Materials → Yates Pit**

- 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 → Yates Pit; 2020-02-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** MORIAH TFS OPERATIONS LLC dba Thompson Materials → Yates Pit; 2023-03-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Moriah TFS Holdings LLC → MORIAH TFS OPERATIONS LLC dba Thompson Materials; 2023-03-20 to current/open; source msha-controller-operator-history