U.S. ports prepare for Panama Canal expansion

Giant backhoes claw into the ground, as helmeted workers position rebar atop of concrete pillars 100 feet tall. Cranes, trucks and teams of workers toil through a construction site here large enough to fit three Empire State Buildings, laying end to end. 

http://www.usatoday.com/story/money/2015/04/19/panama-canal-expansion-us-ports/25827175/