Foundry for the future: The Silicon Valley of Appalachia

PITTSBURGH, Pennsylvania — The familiar hum of a coal barge pushing the region’s black gold up the Monongahela River holds the same low rumble it did a century ago, softly echoing through the valley towns where steel once defined the American identity.

But follow the Monongahela River just upstream from Pittsburgh, toward the historic Hazelwood […] ...