# Relationship history for MSHA mine 3901452

Current hierarchy: **Warren  Barse → C & W Enterprises Inc → C & W Crushing Plant #1**

- 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:** C & W Enterprises Inc → C & W Crushing Plant #1; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Warren  Barse → C & W Crushing Plant #1; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Warren  Barse → C & W Enterprises Inc; 2000-08-01 to current/open; source msha-controller-operator-history