# Relationship history for MSHA mine 4202498

Current hierarchy: **Danny  Bown → Bown Stone Products Inc → Antelope Valley**

- 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:** Danny  Bown  et al → Antelope Valley; 2008-03-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bown Stone Products Inc → Antelope Valley; 2008-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Danny  Bown  et al → Bown Stone Products Inc; 2008-04-16 to current/open; source msha-controller-operator-history