During its heyday in the 1950s and 1960s, the Bethlehem Steel mill at Sparrows Point near Baltimore was one of the world's largest steel plants, employing as many as 30,000 workers. But these glory years were short-lived, as the American steel industry soon collapsed, taking with it the high-income industrial jobs that many Sparrows Point workers had come to enjoy. This familiar tale of decline in America's industrial heartland is only part of...