The young men in business suits, gingerly picking their way among the millwrights, machinists and pipefitters at Kansas City's Worldwide Grinding Systems steel mill. Gaping up at the cranes that swung 10-foot cast iron buckets through the air. Jumping at the thunder from the melt shop's electric-arc furnace as it turned scrap metal into lava. "They looked like a bunch of high school kids to me. A bunch of Wall Street preppies," says Jim Linson, an electronics repairman who worked at the plant for 40 years. "They came in, they were in awe." Apparently they liked what they saw. Soon...