# Relationship history for MSHA mine 1517324

Current hierarchy: **Mc Cullough Earl → B & E Inc → Auger #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:** Mc Cullough Earl → Auger #1; 1984-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B & E Inc → Auger #1; 1992-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Cullough Earl → B & E Inc; 1992-11-01 to current/open; source msha-controller-operator-history