# Relationship history for MSHA mine 4605508

Current hierarchy: **Bostic Joe → Joe Bostic Operation → Permit No 34-77 P Surface**

- 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:** Joe Bostic Operation → Permit No 34-77 P Surface; 1977-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bostic Joe → Permit No 34-77 P Surface; 1977-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bostic Joe → Joe Bostic Operation; 1977-05-01 to current/open; source msha-controller-operator-history