# Relationship history for MSHA mine 3609117

Current hierarchy: **Harold N  Lewis → Harold N Lewis → Lewis #1 Lewis #2 Lewis #3**

- 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:** Harold N Lewis → Lewis #1 Lewis #2 Lewis #3; 2003-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Harold N  Lewis → Lewis #1 Lewis #2 Lewis #3; 2003-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harold N  Lewis → Harold N Lewis; 2003-02-03 to current/open; source msha-controller-operator-history