I applied in-person. The process took 2 weeks. I interviewed at Simbol Materials (Calipatria, CA) in Feb 2012
Interview
The process was not that bad. It took a couple of days to get the interview in person. The questions were technical and it was one on one. The plant is located in the desert near the salton sea.
Interview questions [1]
Question 1
Technical questions regarding chemistry and equipment