# Relationship history for MSHA mine 4605557

Current hierarchy: **Arthur Fred R → Pavex Inc → Glen Jean 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

- **controller_controls_mine:** Arthur Fred R → Glen Jean Surface; 1975-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pavex Inc → Glen Jean Surface; 1977-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arthur Fred R → Pavex Inc; 1977-06-01 to current/open; source msha-controller-operator-history