# Relationship history for MSHA mine 3608066

Current hierarchy: **Zuccarelli John A Iii → A M Kennedy Inc → A M Kennedy Landfill**

- 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:** A M Kennedy Inc → A M Kennedy Landfill; 1989-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Zuccarelli John A Iii → A M Kennedy Landfill; 1989-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Zuccarelli John A Iii → A M Kennedy Inc; 1989-02-01 to current/open; source msha-controller-operator-history