This is How Mail Was Processed Back in 1970 Not sure why I was able to watch this whole video, I don’t feel any smarter or any better…but I loved it. Facebook Prev Article Next Article Machinery Checkout these cool gadgets... Related Posts Revisiting – Car shredding machine Machine Pours Concrete Perfectly 120 Year Old Fully Functioning Calculator Ninebot One, the Futuristic Self-Balancing, One-Wheeled Scooter Inside The World’s Most Colorful Factory – DayGlow A giant crane lifting a huge crane lifting a big crane lifting a crane