# Relationship history for MSHA mine 2902293

Current hierarchy: **Belinda  Montano; Vicki  Montano; Janet  Montano → Southwest Landscaping Materials LLC → Aviation Mine**

- 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:** Montano's Excavating & Trenching Inc → Aviation Mine; 2005-09-13 to 2025-10-28; source msha-controller-operator-history
- **controller_controls_mine:** Victor  Montano → Aviation Mine; 2005-09-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Victor  Montano → Montano's Excavating & Trenching Inc; 2005-09-13 to 2025-10-28; source msha-controller-operator-history
- **operator_operates_mine:** Southwest Landscaping Materials LLC → Aviation Mine; 2025-10-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Janet  Montano et al → Aviation Mine; 2025-10-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Janet  Montano et al → Southwest Landscaping Materials LLC; 2025-10-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Belinda  Montano et al → Southwest Landscaping Materials LLC; 2025-10-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vicki  Montano et al → Southwest Landscaping Materials LLC; 2025-10-29 to current/open; source msha-controller-operator-history