# Relationship history for MSHA mine 3402042

Current hierarchy: **Scott A  Valentine; Debbie  Valentine → GSD Materials → GSD Materials**

- 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:** GSD Materials → GSD Materials; 2007-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scott A  Valentine et al → GSD Materials; 2007-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott A  Valentine et al → GSD Materials; 2007-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Debbie  Valentine et al → GSD Materials; 2007-08-02 to current/open; source msha-controller-operator-history