# Relationship history for MSHA mine 4104387

Current hierarchy: **Joey C  Sonntag → Sonntag Materials, Inc. → Sonntag Materials, Inc.**

- 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:** Hood County Redi MIx → Sonntag Materials, Inc.; 2002-10-21 to 2005-04-10; source msha-controller-operator-history
- **controller_controls_mine:** Joey C  Sonntag → Sonntag Materials, Inc.; 2002-10-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joey C  Sonntag → Hood County Redi MIx; 2002-10-21 to 2005-04-10; source msha-controller-operator-history
- **controller_controls_mine:** Joey C  Sonntag → Sonntag Materials, Inc.; 2004-12-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sonntag Materials, Inc. → Sonntag Materials, Inc.; 2005-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joey C  Sonntag → Sonntag Materials, Inc.; 2005-04-11 to current/open; source msha-controller-operator-history