# Relationship history for MSHA mine 4703814

Current hierarchy: **Gerald  Pelishek → Walworth Materials → IARBIS Mine**

- 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:** Walworth Materials → IARBIS Mine; 2017-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gerald  Pelishek → IARBIS Mine; 2017-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gerald  Pelishek → Walworth Materials; 2017-11-15 to current/open; source msha-controller-operator-history