# Relationship history for MSHA mine 0505165

Current hierarchy: **Robert  Young Jr → Young Ranch Resource, LLC → Young Ranch Resource**

- 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:** Young Ranch Resource, LLC → Young Ranch Resource; 2023-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Young Jr → Young Ranch Resource; 2023-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Young Jr → Young Ranch Resource, LLC; 2023-03-01 to current/open; source msha-controller-operator-history