# Relationship history for MSHA mine 4703837

Current hierarchy: **Steven  Haas; Gary  Haas → Haas Son's Inc. → Crusher#7**

- 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:** Gary  Haas et al → Crusher#7; 1985-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeff  Antczak → Crusher#7; 2018-03-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Antczak Aggregate Producers LLC → Crusher#7; 2019-03-14 to 2025-02-20; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Antczak → Antczak Aggregate Producers LLC; 2019-03-14 to 2025-02-20; source msha-controller-operator-history
- **operator_operates_mine:** Haas Son's Inc. → Crusher#7; 2025-02-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Haas et al → Haas Son's Inc.; 2025-02-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steven  Haas et al → Haas Son's Inc.; 2025-02-21 to current/open; source msha-controller-operator-history