# Relationship history for MSHA mine 3609766

Current hierarchy: **Ronald Francis  Onufry → Ron Onufry Flagstone → Knapps 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** ron onufry flagstone → Knapps Mine; 2009-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ronald Francis  Onufry → Knapps Mine; 2009-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald Francis  Onufry → ron onufry flagstone; 2009-06-10 to current/open; source msha-controller-operator-history