# Relationship history for MSHA mine 2003681

Current hierarchy: **Kyle  Thom; Kurt  Thom → Thom Farms Inc → Karlstone**

- 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:** Thom Farms Inc → Karlstone; 2024-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kyle  Thom et al → Karlstone; 2024-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kyle  Thom et al → Thom Farms Inc; 2024-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kurt  Thom et al → Thom Farms Inc; 2024-08-28 to current/open; source msha-controller-operator-history