# Relationship history for MSHA mine 3610442

Current hierarchy: **Edward J  Ratay Jr → COAL LOADERS INC → WESTGREN MINE**

- 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:** James W  Cooper → WESTGREN MINE; 1978-10-01 to 2025-12-30; source msha-controller-operator-history
- **operator_operates_mine:** Coal Loaders Inc → WESTGREN MINE; 2024-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James W  Cooper → Coal Loaders Inc; 2024-04-05 to 2025-12-30; source msha-controller-operator-history
- **controller_controls_mine:** Edward J  Ratay Jr → WESTGREN MINE; 2025-12-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward J  Ratay Jr → Coal Loaders Inc; 2025-12-31 to current/open; source msha-controller-operator-history