# Relationship history for MSHA mine 4105842

Current hierarchy: **GCC SAB de CV → GCC Aggregates → Midland South**

- 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

- **controller_controls_mine:** GCC SAB de CV → Midland South; 2024-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** GCC Aggregates → Midland South; 2026-01-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** GCC SAB de CV → GCC Aggregates; 2026-01-23 to current/open; source msha-controller-operator-history