# Relationship history for MSHA mine 4605329

Current hierarchy: **Cunningham I V → I V Cunningham → No 1 Mine**

- 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:** I V Cunningham → No 1 Mine; 1976-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cunningham I V → No 1 Mine; 1976-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cunningham I V → I V Cunningham; 1976-09-01 to current/open; source msha-controller-operator-history