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Blowing Engine 
Name: Blowing Engine
Collection: Vogel Slide Collection
Site: Cornwall Iron Furnace
Unit: 4
Piece: 2-32
Structure: Gear
Photo credit: Robert M. Vogel
Photo date: 1972-12-12
Notes: Detail of blowing engine drive train -- the "Great Wheel," which weighs 4 tons and measures 24 feet in diameter