# Relationship history for MSHA mine 3901445

Current hierarchy: **Javern  Hofer → Hofer'S Trucking → SCREENER**

- 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:** Hofer'S Trucking → SCREENER; 2000-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Javern  Hofer → SCREENER; 2000-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Javern  Hofer → Hofer'S Trucking; 2000-09-01 to current/open; source msha-controller-operator-history