# Relationship history for MSHA mine 1302511

Current hierarchy: **Benjamin J  Brueck → Four Seasons Excavation → Four Seasons Crushing**

- 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:** Benjamin J  Brueck → Four Seasons Crushing; 2020-06-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Four Seasons Excavation → Four Seasons Crushing; 2023-09-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin J  Brueck → Four Seasons Excavation; 2023-09-24 to current/open; source msha-controller-operator-history