Cornwall, PA, United States
Cornwall Furnace. Charcoal iron furnace built by Peter Grubb, operated 1742-1883. Best surviving example of the early Pennsylvania ironworks. Now a State historical shrine, gift of Mrs. Margaret Coleman Buckingham, heir of its famous owner, Robert Coleman.
Listen to the audio guide for Blue plaque № 29117 Free on WIP — starts by itself when you arrive, even with the screen off