Panel interview. The more intersting you are the better. Questions based on problem, your approach and solution, what did you learn from it.

Applied and was called an hour later to schedule a phone interview. Did the interview that afternoon, and it took about an hour. This was a very in-depth phone interview, consisting of questions that required a lot of specific details about my accomplishments in my career. Interviewer made it feel more like a casual conversation than a job interview. Felt very confident, especially since the interviewer told me that I was a "great candidate for this position." Received an email with benefits information and more about the culture at Grainger. It really looks like a great place to work. Received another email about a week later, which was a form email telling me that I didn't get the job.