# Relationship history for MSHA mine 2902322

Current hierarchy: **Orlando  Vasquez; Dosia  Smith → Sun Ranch Stone LLC → Bell Ranch**

- 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:** Sun Ranch Stone LLC → Bell Ranch; 2006-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Orlando  Vasquez et al → Bell Ranch; 2006-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Orlando  Vasquez et al → Sun Ranch Stone LLC; 2006-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dosia  Smith et al → Sun Ranch Stone LLC; 2006-05-08 to current/open; source msha-controller-operator-history