# Relationship history for MSHA mine 1601611

Current hierarchy: **Granite Construction Inc → Slats Lucas Sand and Gravel LLC → Angie Louisiana Plant**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Slats Lucas Sand and Gravel LLC → Angie Louisiana Plant; 2022-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Steven  Warren → Angie Louisiana Plant; 2022-06-16 to 2025-08-28; source msha-controller-operator-history
- **controller_controls_operator:** Steven  Warren → Slats Lucas Sand and Gravel LLC; 2022-06-16 to 2025-08-28; source msha-controller-operator-history
- **controller_controls_mine:** Granite Construction Inc → Angie Louisiana Plant; 2025-08-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Granite Construction Inc → Slats Lucas Sand and Gravel LLC; 2025-08-29 to current/open; source msha-controller-operator-history