# Relationship history for MSHA mine 4703961

Current hierarchy: **Mike  Germano → Trusty Trucking Inc → Portable Plant #2**

- 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:** Mike  Germano → Portable Plant #2; 2000-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Trusty Trucking Inc → Portable Plant #2; 2024-05-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Germano → Trusty Trucking Inc; 2024-05-21 to current/open; source msha-controller-operator-history