# Relationship history for MSHA mine 2602531

Current hierarchy: **Terry J  Reck; Randy A  Reck → Reck Brothers LLC → Simplot Alternative Sand Drying Site**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Terry J  Reck et al → Simplot Alternative Sand Drying Site; 2000-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Reck Brothers LLC → Simplot Alternative Sand Drying Site; 2003-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry J  Reck et al → Reck Brothers LLC; 2003-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy A  Reck et al → Reck Brothers LLC; 2003-12-16 to current/open; source msha-controller-operator-history