# Relationship history for MSHA mine 0505094

Current hierarchy: **Ezra Eldon Lee → Crossfire Aggregate Services LLC → Metso 2.4 North Weld Screen**

- 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

- **controller_controls_mine:** Ezra Eldon Lee → Metso 2.4 North Weld Screen; 2014-01-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Crossfire Aggregate Services LLC → Metso 2.4 North Weld Screen; 2018-06-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ezra Eldon Lee → Crossfire Aggregate Services LLC; 2018-06-20 to current/open; source msha-controller-operator-history