The Postal Workers


Question about the postal worker scene. They are obviously sorting letters, but what puzzles me is that on occasion they toss the letters into some sort of container overhead and some even toss them over their shoulder and the machine seems to suck the letters upward and into the trough.

What's going on there?

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Local versus out of district.

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And it is a suction tube to greatly speed up the process.

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I wonder if that sorting method still exists.

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