Alcoa Process Engineer interview questions

Initial phone interview by HR and hiring manager. This was followed by an on site interview. The onsite interview consited of three hour long interviews with a total of 6 people (two per interview).

Background: I'm a recent grad from a Big Ten University with my bachelor's in engineering. On very short notice I was invited to Whitehall for an interview with Alcoa for an entry level materials process engineer position. I was given a tour of several of their facilities in Whitehall, in which my escorts took some time to pick my brain. Afterwords i had a group interview with 4-6 engineers. I was asked a variety of typical personality interview questions, asked about teamwork, etc. What I wanted to be doing in 5 years. I then met with the department head, who seemed concerned if I would fit in to small town life. The whole process was several hours. I had actually, over a year prior, interviewed with Alcoa when they were recruiting at my college and had 2 interviewers at that point. They are big fans of the group interview. Anyways, I thought I gave the interview of my life but was told they "decided not to fill the position."