Yeah that smiley face stands out against most of the other sights out there. Mostly empty fields
Just a guess but I think it has something to do with processing rice. The building is owned by Riceland foods and Arkansas is the largest producer of rice in the US. The building is really long but not very deep. Maybe the thickness of two of the cylinders.
http://www.google.com/maps/place/34.781083,-91.594872
I have a clear idea when it comes to small scale rice production, looking at that building, it seems that it can cater several tons of rice processing. Awesome!
On the other hand, I also noticed some of the photos that you composed really well, I like how you show one side of the subject, front view or side view. It made it more interesting and simpler to look at. If you see me doing those shots in future, then it's inpired by this post that you did :-)
Thanks for the compliments :)