# Relationship history for MSHA mine 3901111

Current hierarchy: **Summit Inc → Summit Inc → Copper Mnt Qry-Shear & Bloom Or Besant P**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Summit Inc → Copper Mnt Qry-Shear & Bloom Or Besant P; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Summit Inc → Copper Mnt Qry-Shear & Bloom Or Besant P; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Summit Inc → Summit Inc; 1950-01-01 to current/open; source msha-controller-operator-history