# Relationship history for MSHA mine 4609032

Current hierarchy: **Earl Austin  Scholl → Administrative Services Inc → Auger #1 Highland Mining Company**

- 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

- **operator_operates_mine:** Administrative Services Inc → Auger #1 Highland Mining Company; 2004-04-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Earl Austin  Scholl → Auger #1 Highland Mining Company; 2004-04-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Earl Austin  Scholl → Administrative Services Inc; 2004-04-19 to current/open; source msha-controller-operator-history