Was good some assessment about ability to do the job but overall it was professional. You must be prepared and as meek as possible. The Interviewer was nice and understood my questions very well about company culture

I applied online and then completed some psychometric tests. I was invited to do a phone interview a coupe of weeks later which was very casual and asked behavioural questions, i think to see whether or not i would fit the culture. I was then invited to an assessment centre which was a full day of 'activities' with 7 other candidates. We each had to do a presentation for 15 minutes after being given 1 hour preparation time. The presentation topics were simple. We also had to re-do the psychometric tests, we had a site tour, a short talk from the graduate manager and a group activity. I was then invited to a second assessment centre which consisted of 2 interviews, a technical exercise and a site tour. This was all very casual also. The people were very welcoming and made me feel at ease.

Very relaxed, I did an on campus interview first. This was very casual, mostly asking about my specific interests and why I wanted to be at 3M. Lots of questions related to culture fit. From there, my resume was forwarded to a specific department that I was interested. A manager called me to schedule an 'interview' where he essentially asked why I liked engineering, my school, etc. After a casual conversation I was offered the job, then got an email later.