# Relationship history for MSHA mine 3003522

Current hierarchy: **Mike E  Decker; Edward M  Decker → MnE Bluestone → Pagnozzi Quarry**

- 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:** MnE Bluestone → Pagnozzi Quarry; 2005-10-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Edward M  Decker et al → Pagnozzi Quarry; 2005-10-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward M  Decker et al → MnE Bluestone; 2005-10-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike E  Decker et al → MnE Bluestone; 2005-10-12 to current/open; source msha-controller-operator-history