Turns out its boxes for products like cereals that are sent out from this plant. I took the initiative to call first thing this morning and spoke with the shipping folks and they rescheduled the pickup to 11 AM instead of 6 PM which will help me immensely.
The empty trailer I picked up was fine except for a tire with a nail in it, but the folks at the trailer shop had a new one on pronto and I was off to the wash bay then across the street to load.
Since I'm able to load early I can boogie on down the road and get into Illinois tonight which will make my delivery time much easier to make.
Cute girl in the shipping department, too. Might have to request another load out of here sometime if I can.