Thermit welding is not something you see very often and certainly not in the tight confines of the New York City Subway. This process is used to weld two pieces of very hard metal such as steel rails. Correctly done, it is fast and permanent. It also is cool to see.
Photo albums dedicated to the Men, and Women that keep the Railroad running around the clock 365 days a year. From Dispatcher to Track Gangs, these are the people that make the railroad moves!