Mail Sorting at the United States Post Office

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With all of the mail floating around out there, they had to come up with a way to organize all of those letters and packages, making sure they got where they needed to go in time. The post office and its successor the United States Postal Service implemented several innovations to help sort and distribute the mail.

This video was a part a full episode of STEM in 30 titled Mail Away, Mail Away, Mail Away: Innovations in Delivering the Mail:    • Mail Away, Mail Away, Mail Away - STE...  

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