# Relationship history for MSHA mine 4608641

Current hierarchy: **Douglas M  Epling → Mountain Edge Mining Inc → Auger No 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

- **controller_controls_mine:** Douglas M  Epling → Auger No 1; 1994-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mountain Edge Mining Inc → Auger No 1; 1997-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Douglas M  Epling → Mountain Edge Mining Inc; 1997-05-01 to current/open; source msha-controller-operator-history