# Relationship history for MSHA mine 4407411

Current hierarchy: **Charles C  Ungurean → CCU Coal and Construction → SHM40**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Charles C  Ungurean → SHM40; 2019-02-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CCU Coal and Construction → SHM40; 2021-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles C  Ungurean → CCU Coal and Construction; 2021-10-14 to current/open; source msha-controller-operator-history