# Relationship history for MSHA mine 5100318

Current hierarchy: **Robert Scott Pingrey; Sarah  Correa → KAUAI CONCRETE LLC → KAUAI CONCRETE AND ROCK**

- 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:** KAUAI CONCRETE LLC → KAUAI CONCRETE AND ROCK; 2025-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sarah  Correa et al → KAUAI CONCRETE AND ROCK; 2025-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sarah  Correa et al → KAUAI CONCRETE LLC; 2025-12-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert Scott Pingrey et al → KAUAI CONCRETE LLC; 2025-12-09 to current/open; source msha-controller-operator-history