# Relationship history for MSHA mine 5002069

Current hierarchy: **Amie L Sommer; John D Sommer → Tutka, LLC → Lawing Airport Quarry**

- 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:** Tutka, LLC → Lawing Airport Quarry; 2018-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John D Sommer et al → Lawing Airport Quarry; 2018-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John D Sommer et al → Tutka, LLC; 2018-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amie L Sommer et al → Tutka, LLC; 2018-04-04 to current/open; source msha-controller-operator-history