Unfortunately, not in Nebraska that I could find. I looked a few years ago, for my 67. Closest place I coud find was in Indiana, I think. Most of those places have had to close down, due to the cost of the enviormental controls on the chemicals.
If you fine one closer, make sure you let us know!
I would think it would be a pretty decent location, smack in the middle of everything. Wonder what it would cost to get something going? I'm sure a truck load of money. But I really don't care for my job and would love to find a way to be self employed, although that has it's own set of problems.