# Relationship history for MSHA mine 1512338

Current hierarchy: **Cattrell John W → Am-Le-Company Inc → Job No 4**

- 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:** Am-Le-Company Inc → Job No 4; 1980-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cattrell John W → Job No 4; 1980-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cattrell John W → Am-Le-Company Inc; 1980-06-01 to current/open; source msha-controller-operator-history