# Relationship history for MSHA mine 0203190

Current hierarchy: **Richard  Dunwoody Jr → AZ Best LLC → AZ Best  LLC**

- 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

- **operator_operates_mine:** Woody's Landscaping LLC → AZ Best  LLC; 2007-07-17 to 2010-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Joan L  Dunwoody → AZ Best  LLC; 2007-07-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joan L  Dunwoody → Woody's Landscaping LLC; 2007-07-17 to 2010-09-30; source msha-controller-operator-history
- **operator_operates_mine:** AZ Best LLC → AZ Best  LLC; 2010-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Dunwoody Jr → AZ Best  LLC; 2010-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Dunwoody Jr → AZ Best LLC; 2010-10-01 to current/open; source msha-controller-operator-history