# Relationship history for MSHA mine 4104771

Current hierarchy: **Jose Rosario  Valle → Texas Quality Stone Co. → Dyer 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:** Jose Rosario  Valle → Dyer Pit; 2005-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Texas Quality Stone Co. → Dyer Pit; 2009-01-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jose Rosario  Valle → Texas Quality Stone Co.; 2009-01-21 to current/open; source msha-controller-operator-history