Analyses of samples of the raw materials locally available to be used in the Eaton (Hopewell) Furnace show that the iron ore and bituminous coal were of good smelting quality; the limestone (flux) was not. The limestone had a much higher than desirable silica content and a low calcium content. The limestone was incapable of removing impurities introduced through the fuel combination of charcoal and raw coal and contributed to the early shut-down of the furnace operation after only six years of operation. See 19-741. -- AATA