# Relationship history for MSHA mine 3003726

Current hierarchy: **Paul M  Kuzmich; Brian P  Kuzmich → Kuzmich Trucking & Excavating → Johnson Pit**

- 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:** Kuzmich Trucking & Excavating → Johnson Pit; 2009-10-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brian P  Kuzmich et al → Johnson Pit; 2009-10-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian P  Kuzmich et al → Kuzmich Trucking & Excavating; 2009-10-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul M  Kuzmich et al → Kuzmich Trucking & Excavating; 2009-10-26 to current/open; source msha-controller-operator-history