Postal: Lessons Learned from a Visit to the Nation’s Largest Post Office

I also was taken a back by the noise of the operation. With so many machines operating at once, it was very difficult to hear even a simple conversation between two people. And our tour came during the relatively slow part of the USPS’s work day — mid-afternoon. We were told the level of noise would increase significantly later in the day and overnight, the busiest time of the day at the Morgan plant. That’s when the majority of the mail would flow through Morgan, as letter carriers and local post offices dropped off their day’s mail to be processed.