# Relationship history for MSHA mine 3003404

Current hierarchy: **Sidney  Wust → WUST CONSTRUCTION → WUST PIT PORTABLE CRUSHER**

- 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

- **operator_operates_mine:** WUST CONSTRUCTION → WUST PIT PORTABLE CRUSHER; 2002-05-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sidney  Wust et al → WUST PIT PORTABLE CRUSHER; 2002-05-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sidney  Wust et al → WUST CONSTRUCTION; 2002-05-21 to current/open; source msha-controller-operator-history