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Piles of bagged compound ingredients. Tire ingredients which are drawn from this reserve pile for each new set of "batches" include these bags of calcene, carbon , zinc oxide and various other ingredients. General Tires. Sourced from the Library of Congress.

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Piles of bagged compound ingredients. Tire ingredients which are drawn from this reserve pile for each new set of "batches" include these bags of calcene, carbon , zinc oxide and various other ingredients. General Tires. Sourced from the Library of Congress.

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