These are the remains of the earliest iron smelting furnace in America, constructed in 1644 and in operation by spring, 1645.
Under the direction of John Winthrop, Jr. - future governor of Connecticut and a participant in the early years of . . . — — Map (db m298953) HM
Ore, charcoal and rock called gabbro for flux were hauled to this site, and a drying fire was started in the furnace. Within a day or two the water wheels and bellows were set in motion, and the “blast”, once begun, would burn . . . — — Map (db m86192) HM