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Records by evidence tier.

The 9,992 records in four groups. evidence_tier is a mechanical, record-level triage gate applied to evidence-entry fields — not a certification that asbestos exposure aboard a vessel is established. Tier names are provisional (“Tier N”) pending a naming ruling.

Tier 3

513records

At least one evidence entry that is a court record, ship-specific, verified, and supporting.

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Tier 2

9,354records

Vessel class documented, or at least one verified supporting or ship-specific evidence entry.

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Tier 1

12records

Registry-level record — name and hull designation only.

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Unrated

113records

evidence_tier is null — identity unresolved or invalidated; retained for audit and never promoted without review.

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