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Quicklime costs $120 per ton. Lime is used in large quantities as a building and engineering material. The rocks and minerals from which these materials are derived, typically limestone or chalk, are composed primarily of calcium carbonate. They may be cut, crushed or pulverized and chemically altered.
âIt's a business decision they made,â he said. A Cargill spokesman did not respond to calls for comment on Wednesday. Under the contract now ending, the base per ton cost of salt was $57.52. If continued, the agreement provided for cost increases based on the consumer price index, according to Gorski.