# Relationship history for MSHA mine 4703436

Current hierarchy: **Stephen W Verrette → Gillett Cement Products → 578 Portable Wash Plant**

- 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:** Stephen W Verrette → 578 Portable Wash Plant; 2005-08-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gillett Cement Products → 578 Portable Wash Plant; 2005-09-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen W Verrette → Gillett Cement Products; 2005-09-14 to current/open; source msha-controller-operator-history