# Relationship history for MSHA mine 2003372

Current hierarchy: **Virginia L  Poquette → Bessemer Iron Ore Company, Inc. → Peterson 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:** Bessemer Iron Ore Company Inc → Peterson Mine; 2006-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Virginia L  Poquette → Peterson Mine; 2006-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Virginia L  Poquette → Bessemer Iron Ore Company Inc; 2006-08-15 to current/open; source msha-controller-operator-history