# Relationship history for MSHA mine 3003539

Current hierarchy: **Eldon M  King → D & H Excavating Inc → D&H Materials Inc-Hiram Road 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:** D & H Excavating Inc → D&H Materials Inc-Hiram Road Pit; 2006-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eldon M  King → D&H Materials Inc-Hiram Road Pit; 2006-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eldon M  King → D & H Excavating Inc; 2006-04-24 to current/open; source msha-controller-operator-history