# Relationship history for MSHA mine 2401266

Current hierarchy: **Hill W Ray → Madison Star Inc → Watseca Tails & Dumps**

- 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:** Madison Star Inc → Watseca Tails & Dumps; 1983-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hill W Ray → Watseca Tails & Dumps; 1983-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hill W Ray → Madison Star Inc; 1983-01-01 to current/open; source msha-controller-operator-history