# Relationship history for MSHA mine 2902397

Current hierarchy: **Katherina L  Winer; Steven J  Winer → K W Enterprises LLC → Decker Sand Pit**

- 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:** Steven J  Winer et al → Decker Sand Pit; 2005-05-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** K W Enterprises LLC → Decker Sand Pit; 2009-08-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steven J  Winer et al → K W Enterprises LLC; 2009-08-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Katherina L  Winer et al → K W Enterprises LLC; 2009-08-25 to current/open; source msha-controller-operator-history