I Applied online back in October 2016, then sent a link to take a assessment. I week later was called for a phone interview, which led into a in person interview with 3 different ppl. Interview went while, called back in to do a tour of the plant. A week later I was offered the job. The process took 5-6 months.

They use the STAR process - same suggested questions in different orders by 3 different people - interview took about 4 hours including the drug screen and a ride around the plant. about 12 people interviewed at the same time and they switched you from room to room - spent about an hour with various department people that did not work in the area they were hiring for.