# Relationship history for MSHA mine 4201764

Current hierarchy: **State Of Utah → Utah Department Of Transportation → North Hatch 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

- **controller_controls_mine:** State Of Utah → North Hatch Pit; 1979-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Utah Department Of Transportation → North Hatch Pit; 1981-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** State Of Utah → Utah Department Of Transportation; 1981-11-01 to current/open; source msha-controller-operator-history