# Relationship history for MSHA mine 4703835

Current hierarchy: **Toby  Kersten → TL Kersten Excavating, LLC. → TL Kersten Excavating, LLC.**

- 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:** TL Kersten Excavating LLC → TL Kersten Excavating, LLC.; 2018-09-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Toby  Kersten → TL Kersten Excavating, LLC.; 2018-09-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Toby  Kersten → TL Kersten Excavating LLC; 2018-09-12 to current/open; source msha-controller-operator-history