# Relationship history for MSHA mine 2103171

Current hierarchy: **Steven  Abnet; Jason  Abnet → La Crescent Rock Products Inc → Abnet Quarry**

- 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:** La Crescent Rock Products Inc → Abnet Quarry; 1998-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Abnet → Abnet Quarry; 1998-07-01 to 2025-07-22; source msha-controller-operator-history
- **controller_controls_operator:** John  Abnet → La Crescent Rock Products Inc; 1998-07-01 to 2025-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Steven  Abnet et al → Abnet Quarry; 2025-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steven  Abnet et al → La Crescent Rock Products Inc; 2025-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jason  Abnet et al → La Crescent Rock Products Inc; 2025-07-23 to current/open; source msha-controller-operator-history