# Relationship history for MSHA mine 2402639

Current hierarchy: **Roy Matthew  Moen → Moen Builders, Inc. → Prospect Mill & 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:** Roy Matthew  Moen → Prospect Mill & Crusher; 2015-04-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Moen Builders, Inc. → Prospect Mill & Crusher; 2015-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roy Matthew  Moen → Moen Builders, Inc.; 2015-12-04 to current/open; source msha-controller-operator-history