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• What primary source supports the Hall-Héroult era aluminium price figures ($16/lb 1884 → $2/lb 1889 → $0.5/lb 1894)?
  question answered 2026-07-12 · economics, commodity-markets, aluminium, sourcing, price-history
• How did the Amicable Society actually price life assurance — did it pool members without age-rating and split a fixed dividend among survivors?
  question answered 2026-07-11 · actuarial-history, insurance, mechanism, institutional-history, verification