# Relationship history for MSHA mine 3610462

Current hierarchy: **Theodore H Siri III → Siri Contracting, LLC → Metso LT300 Serial # 182237**

- 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:** Theodore H Siri III → Metso LT300 Serial # 182237; 2022-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Siri Contracting, LLC → Metso LT300 Serial # 182237; 2025-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Theodore H Siri III → Siri Contracting, LLC; 2025-02-10 to current/open; source msha-controller-operator-history