# Relationship history for MSHA mine 1518226

Current hierarchy: **Claude W  Allen → C W Augering Inc → No 11**

- 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

- **controller_controls_mine:** Claude W  Allen → No 11; 1996-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C W Augering Inc → No 11; 1999-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Claude W  Allen → C W Augering Inc; 1999-12-01 to current/open; source msha-controller-operator-history