About the half-point screen
Each bar represents two points out of 10, in half-point steps. Screening compares commodity-specific grade × reported interval. Issuer-reported equivalents use the corresponding base-metal reference and retain the Eq label. Their price and recovery assumptions are not independently verified. Unidentified metals and intervals that cannot be confirmed from available source text remain unscored. True width, continuity, recovery and economics are not assessed. Read the full methodology →