Harford Road presents many historical suprises. Along this hilly, winding road in Baltimore County resides the Gunpowder Copper Works Mill. In operation from 1804 to 1833…
This mill was built by Levi Hollingsworth to roll and fabricate refined blocks of copper that were shipped to Baltimore from Wales and hauled to the mill by oxcart. The copper used for roofing the original dome of the capitol was rolled and fabricted there.
