# Relationship history for MSHA mine 3003725

Current hierarchy: **St Lawrence County-NY → St. Lawrence County Dept of Highways → St Lawrence Cnty & Rich F Woodside Grave**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** St. Lawrence County Dept of Highways → St Lawrence Cnty & Rich F Woodside Grave; 2009-10-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** St Lawrence County-NY → St Lawrence Cnty & Rich F Woodside Grave; 2009-10-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** St Lawrence County-NY → St. Lawrence County Dept of Highways; 2009-10-22 to current/open; source msha-controller-operator-history