# Relationship history for MSHA mine 3001934

Current hierarchy: **Town Of York-Ny → Town Of York → HIGHWAY DEPARTMENT 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Town Of York → HIGHWAY DEPARTMENT PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Town Of York-Ny → HIGHWAY DEPARTMENT PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Town Of York-Ny → Town Of York; 1950-01-01 to current/open; source msha-controller-operator-history