# Relationship history for MSHA mine 3003783

Current hierarchy: **Patrick  Curran → Curran Logging Inc. → Power Screen Warrier 1800 S/N 12300676**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Patrick  Curran → Power Screen Warrier 1800 S/N 12300676; 2005-04-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Curran Logging Inc. → Power Screen Warrier 1800 S/N 12300676; 2010-10-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patrick  Curran → Curran Logging Inc.; 2010-10-05 to current/open; source msha-controller-operator-history