# Relationship history for MSHA mine 3901685

Current hierarchy: **Jamie  Andrews; Jeremy  Andrews → J&J Earth Works, Inc → Willow Creek 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** J&J Earth Works, Inc → Willow Creek Pit; 2024-06-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jamie  Andrews → Willow Creek Pit; 2024-06-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jamie  Andrews → J&J Earth Works, Inc; 2024-06-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeremy  Andrews → J&J Earth Works, Inc; 2024-06-28 to current/open; source msha-controller-operator-history