# Relationship history for MSHA mine 3004112

Current hierarchy: **Duane M Hull → Hull Excavating Inc. → Lombardozzi Gravel Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Duane M Hull → Lombardozzi Gravel Mine; 2016-03-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hull Excavating Inc. → Lombardozzi Gravel Mine; 2023-03-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Duane M Hull → Hull Excavating Inc.; 2023-03-13 to current/open; source msha-controller-operator-history