# Relationship history for MSHA mine 3304715

Current hierarchy: **Thomas J  Wylie → Wylie and Sons Landscaping, LLC → Wylie and Sons**

- 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

- **operator_operates_mine:** Wylie and Sons Landscaping, LLC → Wylie and Sons; 2014-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas J  Wylie → Wylie and Sons; 2014-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas J  Wylie → Wylie and Sons Landscaping, LLC; 2014-12-22 to current/open; source msha-controller-operator-history