![]() ![]() When applied to the blast furnace, it has increased the net profit in the production of pig iron from $0.50 to $0.70 per ton, and in the textile mill it has increased the output from 5 to 15 per cent, at the same time greatly improving the quality and the hygienic conditions surrounding the operative. The application of this new art to many varied industries has been demonstrated to be of greatest economic importance. A specialized engineering field has recently developed, technically known as air conditioning, or the artificial regulation of atmospheric moisture.
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