The Homestead Steel Mill was once the largest and most advanced in the world, powering the expansion of late 19th and early 20th century American industrial might. Now there are just some small reminders here and there that it existed at all, just a few iron furnaces rotting out across the river from a sprawling shopping mall. The 1892 victory over the unions was far more symbolic than Frick, Carnegie or the nation could have ever realized.