National Geographic : 1947 Apr
Steel: Master of Them All 437 Alfred T. Palmer To Make New Tools for Man, a Steel Monster Gulps Six Cubic Yards of Iron Ore Loading an ore car with four dipperfuls, the steam shovel cleans up track terraces left in an exhausted open pit at Wakefield, Michigan. This pit lies in the 80-mile-long Gogebic Range, one of the Lake Superior district's six main belts of iron ore (page 431). Superior's rich mines account for four-fifths of our iron. They were our reservoir of victory in the War of Steel, in which American mills outproduced the combined Axis powers (page 421).