# Relationship history for MSHA mine 2401995

Current hierarchy: **Dean  Van Voast → Blaine Ready Mix Inc → Blaine Ready Mix**

- 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

- **operator_operates_mine:** Blaine Ready Mix Inc → Blaine Ready Mix; 1993-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dean  Van Voast  et al → Blaine Ready Mix; 1993-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dean  Van Voast  et al → Blaine Ready Mix Inc; 1993-03-01 to current/open; source msha-controller-operator-history