# Relationship history for MSHA mine 3606683

Current hierarchy: **Martarano Angelo → Angelo Martarano → York Streek Refuse Bank**

- 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:** Angelo Martarano → York Streek Refuse Bank; 1978-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Martarano Angelo → York Streek Refuse Bank; 1978-05-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martarano Angelo → Angelo Martarano; 1978-05-30 to current/open; source msha-controller-operator-history