GE Transportation has unveiled a moving assembly line at its locomotive plant in Contagem, Brazil.

General Electric Co. is the world’s largest builder of diesel-electric locomotives. Its products are used by numerous railroads to haul freight and passengers. Thousands of GE machines are in operation every day throughout the world.

FORT WORTH, TX—This photo essay provides a behind-the-scenes look at General Electric’s massive assembly plant here, a 1-million-square-foot factory where the company makes locomotives.