# Relationship history for MSHA mine 0302040

Current hierarchy: **Rex  Kutina → Arkansas River Whitetails, LLC → Sandstone Aggregates**

- 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:** Arkansas River Whitetails, LLC → Sandstone Aggregates; 2013-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rex  Kutina → Sandstone Aggregates; 2013-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rex  Kutina → Arkansas River Whitetails, LLC; 2013-07-02 to current/open; source msha-controller-operator-history