| Summary: | "Calcining Plant. The plant shown in the picture consists of eight kilns and has a capacity of 1,000 barrels of lime per day. It is of steel and brick construction and is fireproof. Limestone is charged into the hoppers above the kilns and passes downward through the kilns and is drawn out on the limehouse floor, ten feet below the firing level. The heat for burning is supplied by the furnaces set at the base of the kilns. The flame passes upward through the stone in the shafts of the kilns. Upon being heated to a certain temperature forty per cent of the weight of the stone is driven off in the form of carbonic acid gas. This leaves the lime still in lumps, but much lighter in weight. It is drawn from the kilns every three hours by mechanical drawers and after cooling and sorting is loaded into cars in bulk or in packages, or is hydrated and packed in paper bags."
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