# Relationship history for MSHA mine 3201010

Current hierarchy: **Luke  Moseman; Tonia M  Schmidt → Northern Mining & Aggregate Solutions → Warrior**

- 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:** Tonia M  Schmidt et al → Warrior; 2013-03-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Northern Mining & Aggregate Solutions → Warrior; 2013-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tonia M  Schmidt et al → Northern Mining & Aggregate Solutions; 2013-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Luke  Moseman et al → Northern Mining & Aggregate Solutions; 2013-05-29 to current/open; source msha-controller-operator-history