# Relationship history for MSHA mine 3610470

Current hierarchy: **James  Marzolino → Kriger Construction Inc. → Astec C3055 Electric Jaw 420856**

- 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:** Kriger Construction Inc. → Astec C3055 Electric Jaw 420856; 2025-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James  Marzolino → Astec C3055 Electric Jaw 420856; 2025-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Marzolino → Kriger Construction Inc.; 2025-01-29 to current/open; source msha-controller-operator-history