# Relationship history for MSHA mine 3003002

Current hierarchy: **Town Of Hounsfield-Ny → Town Of Hounsfield → Rome State Road Quarry**

- 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 Hounsfield-Ny → Rome State Road Quarry; 1989-07-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Town Of Hounsfield → Rome State Road Quarry; 1991-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Town Of Hounsfield-Ny → Town Of Hounsfield; 1991-04-01 to current/open; source msha-controller-operator-history