# Relationship history for MSHA mine 3200901

Current hierarchy: **Jennifer  Guderjahn; Jason  Guderjahn → Guderjahn Trucking, Inc. → Guderjahn Trucking, 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Guderjahn Trucking, Inc. → Guderjahn Trucking, Inc.; 2011-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jennifer  Guderjahn et al → Guderjahn Trucking, Inc.; 2011-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jennifer  Guderjahn et al → Guderjahn Trucking, Inc.; 2011-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason  Guderjahn et al → Guderjahn Trucking, Inc.; 2011-09-07 to current/open; source msha-controller-operator-history