The National Iron & Steel Heritage Museum
Cornwall Iron Furnace — 1742
Site Name: Cornwall Iron Furnace

Location: Cornwall, Lebanon County

Dates of Operation: 1742 to 1883

Owners: Peter Grubb and sons; Robert Coleman

Historical Significance: Cornwall Iron Furnace, a National Historic Landmark, is the most fully intact and best preserved example of a 19th-century charcoal fueled blast furnace in Pennsylvania. Robert Coleman was one of Pennsylvania’s first millionaires. Cornwall was representative of Pennsylvania’s 18th and 19th century iron plantations, where villages, stores, schools, churches, and more developed around a successful furnace.