If the railroads won the Gilded Age, the coal industry lost it. Railroads epitomized modern management, high technology, and vast economies of scale. By comparison, the coal industry was embarrassingly primitive. Miners and operators dug coal, bought it, and sold it in 1900 in the same ways that they had for generations. In the popular imagination, coal miners epitomized anti-modern forces as the so-called “Molly Maguire” terrorists. Yet the sleekly modern railroads were...