# Relationship history for MSHA mine 4406562

Current hierarchy: **James S  Jackson → Coastal Shoals Sand Company Inc → Coastal Shoals 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:** Coastal Shoals Sand Company Inc → Coastal Shoals Sand; 1990-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James S  Jackson → Coastal Shoals Sand; 1990-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James S  Jackson → Coastal Shoals Sand Company Inc; 1990-01-01 to current/open; source msha-controller-operator-history