# Relationship history for MSHA mine 3002137

Current hierarchy: **Farrar Harry B → Farrar Landscaping Inc → Sucarski Pit**

- 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:** Essex County Highway Department → Sucarski Pit; 1950-01-01 to 1983-06-15; source msha-controller-operator-history
- **controller_controls_mine:** Essex County-Ny → Sucarski Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Essex County-Ny → Essex County Highway Department; 1950-01-01 to 1983-06-15; source msha-controller-operator-history
- **operator_operates_mine:** Farrar Landscaping Inc → Sucarski Pit; 1983-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Farrar Harry B → Sucarski Pit; 1983-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Farrar Harry B → Farrar Landscaping Inc; 1983-06-16 to current/open; source msha-controller-operator-history