Here are the stacked bins of watermelons on our floor waiting to get picked up by one of the chain stores (Whole Foods, Wal-Mart, Sams, Harris Teeter, Publix, or Kroger).
Once they are picked in the field they bring them to the packing shed and unload them on this belt.
From there, people on the line "grade" them. They determine what size they are, if they are good enough to go to stores, place stickers on them, and put them in boxes. The bad ones go bye bye here!
Once the box is full the fork lift drivers pick them up and stack them according to what size they are. You have 29's, 36's, 45's , and 60's. The smaller the number, the bigger that watermelon. 29's are seeded and the rest are seedless.