Few people realize the labor involved in track maintenance because we rarely see it. Looks dangerous and hard to believe this was once done by hand.Imagine doing all this by hand as railroaders once did.What I find amazing is the rails are very flexible.Truly amazing. Not only someone had to come up with ideas of doing this, then someone had to design these machines, and some place had to cast it all. Then y'all hope it works. Amazing.They should have ear protection when operating loud machinery