Management agreed to put it to work containing sacks of air mail being dispatched from DC post office to the three main airports in the area ~ roll on ~ roll off ~ and already separated to dispatch in the first handling at DC.
We ran this as an experiment for a month.
We were able to eliminate 24 jobs at the AMFs (air mail facilities) ~ (the employees went elsewhere since volume growth meant we needed an ever increasing amount of manpower).
Then I went in the Army. When I came back the post office had purchased THOUSANDS of these devices.
Over the years USPS ended up with HUNDREDS OF THOUSANDS.
Various people had made various modifications and today's device is about a foot taller than the original, but conceptually they all serve to just move mail ~ in sacks, bags, trays, and so forth of whatever manufacture or shape.
Someday the employees will get wise to what happened and start disabling the APCs and Palletainers and ERMCs ~ just dump 'em over the back dock and spring 'em.
I figure it works backwards. Get rid of a container ~ hire a human!
That's how mechanization all by itself works. That other stuff kicks the labor component upstairs and displaces the bosses.