I've been going to school and earning a degree in process technology and nursing science. This is something a person might want to seriously consider if they want to get out of trucking. I would say it requires average intelligence, but you don't have to be a rocket scientist. It is very doable and takes two years. The local refinery pays $75K a year for 14 days a month of work. Its freaking awesome if you can get on there, but there are other opportunities around the country as well. link to my school website: Process Technology | Northern Oklahoma College There are other schools for the same thing around the country. It can be a very lucrative industry.