# Relationship history for MSHA mine 1201959

Current hierarchy: **Estes Ray → W E Energy Ltd → W E Energy Ltd**

- 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:** W E Energy Ltd → W E Energy Ltd; 1984-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Estes Ray Et Al → W E Energy Ltd; 1984-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Estes Ray Et Al → W E Energy Ltd; 1984-08-01 to current/open; source msha-controller-operator-history