# Relationship history for MSHA mine 3200864

Current hierarchy: **Kent G  Paulson → Paulson Gravel Service, Inc. → Crusher #1**

- 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:** Kent G  Paulson → Crusher #1; 2006-03-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Paulson Gravel Service, Inc. → Crusher #1; 2010-05-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kent G  Paulson → Paulson Gravel Service, Inc.; 2010-05-13 to current/open; source msha-controller-operator-history