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US severity anchor complementing ESAW: BLS Census of Fatal Occupational Injuries (public domain), event/exposure distribution 2023-24 + the machine-relevant "Contact incidents" breakdown (struck/caught/compressed by running powered equipment: 226/213). Key finding: in MANUFACTURING, contact is the leading fatal event (104/353 = 29.5%) — independent support for the model's mechanical-contact emphasis. Ingested into the core RAG collection bp_iace_accident_stats. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>