# Relationship history for MSHA mine 4105058

Current hierarchy: **Dolores  Hernandez; Ruben  Salinas Jr → Cleveland Sand & Gravel → Cleveland Sand & 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Cleveland Sand & Gravel → Cleveland Sand & Gravel; 2014-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dolores  Hernandez et al → Cleveland Sand & Gravel; 2014-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dolores  Hernandez et al → Cleveland Sand & Gravel; 2014-03-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ruben  Salinas Jr et al → Cleveland Sand & Gravel; 2014-03-10 to current/open; source msha-controller-operator-history