# Relationship history for MSHA mine 4703787

Current hierarchy: **Nick  Walton → Unity Customer Services LLC → UCS Balsam Lake**

- 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:** Nick  Walton → UCS Balsam Lake; 2013-09-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Unity Custom Services LLC → UCS Balsam Lake; 2016-09-08 to 2021-06-02; source msha-controller-operator-history
- **controller_controls_operator:** Nick  Walton → Unity Custom Services LLC; 2016-09-08 to 2021-06-02; source msha-controller-operator-history
- **operator_operates_mine:** UCS LLC → UCS Balsam Lake; 2021-06-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nick  Walton → UCS Balsam Lake; 2021-06-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nick  Walton → UCS LLC; 2021-06-03 to current/open; source msha-controller-operator-history