Remnants of iron furnaces with iron ore, slag, charcoal, and iron were found 0.4-0.6 m below the earth's surface using a proton magnetometer. One location contained 72 furnaces (about 0.5 m in diameter in an area of 6 x 6.5 ra), and 2 other locations contained 17 furnaces. In samples from 58 furnaces and in local surface iron ore (oolitic hematite with SiO₂ sandstone) 33 elements were identified spectrometrically, 13 of them in concentrations greater than 1%. The final product had low levels of C, S, Pb, Zn, and Cu and high concentrations of Si, Al, Mn, Ti, and Mg. -- AATA