# Relationship history for MSHA mine 2003479

Current hierarchy: **Andy B  McLean → A McLean & Son Trucking Inc → McLean/Stover Pit #1**

- 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:** A McLean & Son Trucking Inc → McLean/Stover Pit #1; 2013-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Andy B  McLean → McLean/Stover Pit #1; 2013-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Andy B  McLean → A McLean & Son Trucking Inc; 2013-07-15 to current/open; source msha-controller-operator-history