Arizona

Mine railways have long been used to help miners reach the depths of the Earth.

The workers who laid tracks across the country were known as Gandy Dancers. The name is sometimes attributed to a Gandy Tool Co. that manufactured the tools used to build railroads, though the existence of such a company has been debated.

Union Pacific Railroad today will launch the first of seven special trains carrying giant wind turbine blades along with electrical equipment from Houston, Texas, to Sacramento, Calif.