# Relationship history for MSHA mine 2402400

Current hierarchy: **Tye R  Keller; Wilbur W  Keller → Keller Logging Inc → Cedarapids 2236**

- 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:** Keller Logging Inc → Cedarapids 2236; 2005-04-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tye R  Keller et al → Cedarapids 2236; 2005-04-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tye R  Keller et al → Keller Logging Inc; 2005-04-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wilbur W  Keller et al → Keller Logging Inc; 2005-04-14 to current/open; source msha-controller-operator-history