# Relationship history for MSHA mine 1519389

Current hierarchy: **Richard L  Thacker → Coal Operator 1, LLC → NO. 3**

- 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 → NO. 3; 2008-05-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Landfall Mining Inc → NO. 3; 2009-03-01 to 2010-03-17; source msha-controller-operator-history
- **controller_controls_operator:** Bobby Ray  Elswick → Landfall Mining Inc; 2009-03-01 to 2010-03-17; source msha-controller-operator-history
- **controller_controls_mine:** Richard L  Thacker → NO. 3; 2009-09-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Coal Operator 1, LLC → NO. 3; 2010-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard L  Thacker → Coal Operator 1, LLC; 2010-03-18 to current/open; source msha-controller-operator-history