# Relationship history for MSHA mine 2003386

Current hierarchy: **William  McDonald → Saginaw Valley Aggregate → Finlay 390**

- 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:** William  McDonald → Finlay 390; 2005-06-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Saginaw Valley Aggregate → Finlay 390; 2007-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  McDonald → Saginaw Valley Aggregate; 2007-04-04 to current/open; source msha-controller-operator-history