# Relationship history for MSHA mine 2200683

Current hierarchy: **James  Benefield Jr → Benefield Sand Company Inc → Benefield Sand**

- 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:** Benefield Sand Company Inc → Benefield Sand; 1997-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James  Benefield Jr → Benefield Sand; 1997-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Benefield Jr → Benefield Sand Company Inc; 1997-05-01 to current/open; source msha-controller-operator-history