# Relationship history for MSHA mine 0203230

Current hierarchy: **Craig A  Bennetts; Robert  Fried → Colorado River Aggregate LLC → Portable Crushing Plant #1**

- 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:** Colorado River Aggregate LLC → Portable Crushing Plant #1; 2008-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Craig A  Bennetts  et al → Portable Crushing Plant #1; 2008-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Craig A  Bennetts  et al → Colorado River Aggregate LLC; 2008-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Fried  et al → Colorado River Aggregate LLC; 2008-10-30 to current/open; source msha-controller-operator-history