# Relationship history for MSHA mine 3609481

Current hierarchy: **Joseph E  Shingara → S B Coal Co. → Joe Shingara**

- 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:** S B Coal Co. → Joe Shingara; 2006-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joseph E  Shingara → Joe Shingara; 2006-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph E  Shingara → S B Coal Co.; 2006-11-16 to current/open; source msha-controller-operator-history