# Relationship history for MSHA mine 3610478

Current hierarchy: **Wayne A Ryan; Brett  Ryan → Soils Inc → Soils Incorporated Sand And Gravel**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Soils Inc → Soils Incorporated Sand And Gravel; 2025-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brett  Ryan et al → Soils Incorporated Sand And Gravel; 2025-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brett  Ryan et al → Soils Inc; 2025-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wayne A Ryan et al → Soils Inc; 2025-08-10 to current/open; source msha-controller-operator-history