"We expanded President Lincoln's vision from using the railroad to link the east and the west to using the railroad to connect the U.S. to the world. Nearly 40 percent of our business is international in either origin or destination and we are the only North American railroad with access to all six major Mexico rail gateways." Some of Union Pacific's ongoing transportation infrastructure projects include: NYSE Closing Bell Koraleski will be joined by 11 other Union Pacific employees to ring the New York Stock Exchange (NYSE) closing bell July 2. The event is as much a celebration of Union Pacific's future as its past. "Union Pacific has never been stronger or better positioned to serve our 10,000 customers," Koraleski said. "Our employees truly are committed to our mission to serve and I am proud to have these 11 join me to represent all of our 45,000 employees at the closing bell."