# Relationship history for MSHA mine 1601538

Current hierarchy: **Lanny G  Crowe → Industrial Mining, LLC → Riverwood**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Lanny G  Crowe → Riverwood; 2006-10-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Industrial Mining, LLC → Riverwood; 2014-06-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lanny G  Crowe → Industrial Mining, LLC; 2014-06-18 to current/open; source msha-controller-operator-history