# Relationship history for MSHA mine 2103302

Current hierarchy: **Aaran Harold  Leustek → Louis Leustek & Sons, Inc → CEDAR RAPIDS 6x20 SCREEN**

- 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:** Aaran Harold  Leustek → CEDAR RAPIDS 6x20 SCREEN; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Louis Leustek & Sons, Inc → CEDAR RAPIDS 6x20 SCREEN; 2001-10-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aaran Harold  Leustek → Louis Leustek & Sons, Inc; 2001-10-23 to current/open; source msha-controller-operator-history