# Relationship history for MSHA mine 2402827

Current hierarchy: **Silver Bow Mining Corp → SBM Montana LLC → Silver Bow Mine**

- 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:** Silver Bow Mining Corp → Silver Bow Mine; 2021-06-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** SBM Montana LLC → Silver Bow Mine; 2026-02-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Silver Bow Mining Corp → SBM Montana LLC; 2026-02-02 to current/open; source msha-controller-operator-history