Keywords: Hopewell Furnace overview.jpg 75001481 41 2 14 N 80 35 26 W Overview of w Hopewell Furnace Site Hopewell Furnace located along Yellow Creek east of the Lake Hamilton Dam in Poland Township Mahoning County Ohio Poland Township Mahoning County Ohio Mahoning County Ohio United States Built in 1802 it was the first blast furnace west of the Appalachians and the first industrial operation in the Western Reserve It is listed on the National Register of Historic Places as an archaeological site own 2014-10-14 User Nyttend Nyttend No<nowiki></nowiki>ne Built in Ohio in 1802 Blast furnaces in the United States Industrial archaeology in the United States Industrial heritage in Ohio National Register of Historic Places in Mahoning County Ohio Poland Township Mahoning County Ohio Building-centered pictures by User Nyttend |