# Relationship history for MSHA mine 4703956

Current hierarchy: **Nick  Walton → UCS, LLC → Cedar Rapids Jaw Crusher**

- 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

- **controller_controls_mine:** Nick  Walton → Cedar Rapids Jaw Crusher; 2021-06-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** UCS, LLC → Cedar Rapids Jaw Crusher; 2024-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nick  Walton → UCS, LLC; 2024-04-22 to current/open; source msha-controller-operator-history