# Relationship history for MSHA mine 3004103

Current hierarchy: **Richard  Barnes → BARNES EXCAVATING INC. → PATNODE ROAD 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

- **operator_operates_mine:** Barnes Excavating Inc. → PATNODE ROAD MINE; 2022-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Barnes → PATNODE ROAD MINE; 2022-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Barnes → Barnes Excavating Inc.; 2022-05-17 to current/open; source msha-controller-operator-history