National Historic Mechanical Engineering Landmark
Nassawango Iron Furnace
Nassawango is structurally typical of its period while distinctive in several ways: it smelted bog ore; it is principally of brick rather than stone; and of greatest significance, it probably is the earliest surviving American furnace that employed the “hot blast.” By this means--now universally used--the production of pig iron was greatly increased. The cast-iron blast-air “stove” at the top of the furnace stack was installed here ca. 1835, less than a decade after introduction of the process, in England.
Marker can be reached from the intersection of Old Furnace Road and Millville Road.
Courtesy hmdb.org
