From 1906 to the 1960s, Danish-born brothers Valdemar and Soren Egekvist built a model of immigrant enterprise. They applied Old World skills in a New World economy. Their chain of Minneapolis bakery stores ultimately led to nationally distributed baked goods.
After the discovery of taconite in the late nineteenth century, scientists struggled to find ways to extract iron ore from this sedimentary rock, which contains 25 to 30 percent iron. The process that was eventually developed involves crushing the hard rock into a powder-like consistency. The iron ore is then removed with magnets and turned into pellets.