# Relationship history for MSHA mine 2003355

Current hierarchy: **Chippewa County-MI → Chippewa County Road Commission → Finley Screen Plant**

- 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:** Chippewa County Road Commission → Finley Screen Plant; 2006-04-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chippewa County-MI → Finley Screen Plant; 2006-04-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chippewa County-MI → Chippewa County Road Commission; 2006-04-26 to current/open; source msha-controller-operator-history