# Relationship history for MSHA mine 3610434

Current hierarchy: **David  Stafursky → Blue Ridge Aggregate LLC → Lenox Quarry**

- 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:** Blue Ridge Aggregate LLC → Lenox Quarry; 2023-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David  Stafursky → Lenox Quarry; 2023-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Stafursky → Blue Ridge Aggregate LLC; 2023-10-30 to current/open; source msha-controller-operator-history