# Relationship history for MSHA mine 4105384

Current hierarchy: **Angel Brothers Holdings Corp → Angel Brothers Enterprises → Esperanza 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:** Angel Brothers Enterprises → Esperanza Pit; 2018-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Angel Brothers Holdings Corp → Esperanza Pit; 2018-08-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Angel Brothers Holdings Corp → Angel Brothers Enterprises; 2018-08-22 to current/open; source msha-controller-operator-history