# Relationship history for MSHA mine 3606275

Current hierarchy: **George  Kaminski → Kaminski Brothers Inc → Hillside Stripping**

- 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

- **controller_controls_mine:** George  Kaminski et al → Hillside Stripping; 1976-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kaminski Brothers Inc → Hillside Stripping; 1976-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George  Kaminski et al → Kaminski Brothers Inc; 1976-11-15 to current/open; source msha-controller-operator-history