# Relationship history for MSHA mine 4606608

Current hierarchy: **Bruce W  Sigler → Relgis Inc → Beech Glen Mine #1**

- 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:** Relgis Inc → Beech Glen Mine #1; 1982-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bruce W  Sigler → Beech Glen Mine #1; 1982-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bruce W  Sigler → Relgis Inc; 1982-10-01 to current/open; source msha-controller-operator-history