# Relationship history for MSHA mine 4703634

Current hierarchy: **William  Sonnentag → County Ready Mix Corp. → Hazelhurst Wash Plant**

- 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 → Hazelhurst Wash Plant; 2005-05-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** County Materials Corp. → Hazelhurst Wash Plant; 2012-03-07 to 2023-03-08; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Sonnentag et al → County Materials Corp.; 2012-03-07 to 2023-03-08; source msha-controller-operator-history
- **operator_operates_mine:** County Ready Mix Corp. → Hazelhurst Wash Plant; 2023-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William  Sonnentag → Hazelhurst Wash Plant; 2023-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Sonnentag → County Ready Mix Corp.; 2023-03-09 to current/open; source msha-controller-operator-history