# Relationship history for MSHA mine 2402296

Current hierarchy: **WARREN  WALLERS → Dream Stone → Dream Stone**

- 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

- **operator_operates_mine:** Dream Stone → Dream Stone; 2002-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** WARREN  WALLERS → Dream Stone; 2002-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** WARREN  WALLERS → Dream Stone; 2002-08-07 to current/open; source msha-controller-operator-history