At the Quincy Mine Shaft No. 2, the worlds deepest shaft when operations ceased in 1945 at over 9,200 feet, ore was raised using the world's largest steam-driven mine hoist, built in 1918. The Hoist would pull the 10 ton cars, each with 10 ton of ore up the shaft and then dump them into rail cars to be taken to a nearby smelter. Photo by Kathy Weiser-Alexander.