# Relationship history for MSHA mine 2103589

Current hierarchy: **Rodney M  Kern → Kern Excavating LLC → Screener #1**

- 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:** Hegman Kern Excavating → Screener #1; 2007-06-06 to 2014-07-01; source msha-controller-operator-history
- **controller_controls_mine:** Rodney M  Kern → Screener #1; 2007-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rodney M  Kern → Hegman Kern Excavating; 2007-06-06 to 2014-07-01; source msha-controller-operator-history
- **operator_operates_mine:** Kern Excavating LLC → Screener #1; 2014-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rodney M  Kern → Screener #1; 2014-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rodney M  Kern → Kern Excavating LLC; 2014-07-02 to current/open; source msha-controller-operator-history