# Relationship history for MSHA mine 3503821

Current hierarchy: **Aggregate Resource Industries Inc → Aggregate Resource Crushing, LLC → Plant #3**

- 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:** Aggregate Resource Industries Inc → Plant #3; 2011-04-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Aggregate Resource Crushing, LLC → Plant #3; 2014-10-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aggregate Resource Industries Inc → Aggregate Resource Crushing, LLC; 2014-10-29 to current/open; source msha-controller-operator-history