# Relationship history for MSHA mine 2402079

Current hierarchy: **Brady G  Nelson → A A A Construction of Missoula, LLC → A A A Portable 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** A A A Construction of Missoula, LLC → A A A Portable Crusher; 1995-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brady G  Nelson → A A A Portable Crusher; 1995-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brady G  Nelson → A A A Construction of Missoula, LLC; 1995-08-01 to current/open; source msha-controller-operator-history