James GayleyDied 25 Feb 1920 at age 64 (born 11 Oct 1855).American metallurgist who invented a device to ensure uniform humidity in the air stream going into blast furnaces. With prior experience at several iron works, Gayley was hired by the Edgar Thomson Steel Works as Superintendent of the Blast Furnaces (1885). In this capacity was an economist, and made a record reduction in the coke consumption. He invented the bronze cooling plate for blast furnace walls, the auxiliary casting stand for Bessemer steel plants, and was the first to use the compound condensing blowing engine with the Blast Furnace. He also invented the dry-air blast, for which the Franklin Institute awarded him the Elliott Cresson medal. Gayley rose to first vice-president of the U.S.Steel Corp and acquired a large fortune.