# Relationship history for MSHA mine 4703453

Current hierarchy: **Tim  Sonnentag → County  Materials Corporation → Custer Agg Eater**

- 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:** Tim  Sonnentag et al → Custer Agg Eater; 2005-05-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** County  Materials Corporation → Custer Agg Eater; 2006-04-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Sonnentag et al → County  Materials Corporation; 2006-04-18 to current/open; source msha-controller-operator-history