# Relationship history for MSHA mine 3002639

Current hierarchy: **Town Of Delhi - NY → Town Of Delhi Highway Department → ROGER HALL**

- 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

- **controller_controls_mine:** Town Of Delhi - NY → ROGER HALL; 1980-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Town Of Delhi Highway Department → ROGER HALL; 1983-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Town Of Delhi - NY → Town Of Delhi Highway Department; 1983-10-01 to current/open; source msha-controller-operator-history