# Relationship history for MSHA mine 1519383

Current hierarchy: **Bobby Ray  Elswick → Landfall Mining Inc → Big Sandy Refuse**

- 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:** Bobby Ray  Elswick → Big Sandy Refuse; 2008-05-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Landfall Mining Inc → Big Sandy Refuse; 2009-02-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bobby Ray  Elswick → Landfall Mining Inc; 2009-02-02 to current/open; source msha-controller-operator-history