I applied through university. The process took 2 weeks. I interviewed at Vesuvius (Chicago Heights, IL) in May 2012
Interview
The interview process is not as difficult as you thought. You will be assigned on one task and asked to be finished in one week. Then they would test the result to determine whether or not to hire you.
Interview questions [1]
Question 1
They will ask you to finished one task. I got the one I needed to make a drawings for the existing mold in one week.