# Relationship history for MSHA mine 3610496

Current hierarchy: **Milton Alfredo Samaniego Chacon → Samaniego Stone LLC → Natural Stone**

- 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:** Milton Alfredo Samaniego Chacon → Natural Stone; 2020-11-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Samaniego Stone LLC → Natural Stone; 2026-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Milton Alfredo Samaniego Chacon → Samaniego Stone LLC; 2026-03-30 to current/open; source msha-controller-operator-history