# Relationship history for MSHA mine 2402266

Current hierarchy: **Gregory  Lucht → Concrete Materials of Montana LLC → Medina 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Concrete Materials of Montana LLC → Medina Pit; 2002-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gregory  Lucht → Medina Pit; 2002-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gregory  Lucht → Concrete Materials of Montana LLC; 2002-04-01 to current/open; source msha-controller-operator-history