# Relationship history for MSHA mine 4503663

Current hierarchy: **Jerry  Herling → Herling Construction Inc → Windy Flats**

- 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:** Herling Construction Inc → Windy Flats; 2009-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jerry  Herling → Windy Flats; 2009-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  Herling → Herling Construction Inc; 2009-06-04 to current/open; source msha-controller-operator-history