# Relationship history for MSHA mine 2902549

Current hierarchy: **Eric  Onsurez; Brian  Stevens; Steven  Johnson → Mo's Crushing LLC → Witt Pit**

- 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:** Mo's Crushing LLC → Witt Pit; 2023-06-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brian  Stevens et al → Witt Pit; 2023-06-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian  Stevens et al → Mo's Crushing LLC; 2023-06-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steven  Johnson et al → Mo's Crushing LLC; 2023-06-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eric  Onsurez et al → Mo's Crushing LLC; 2023-06-22 to current/open; source msha-controller-operator-history