3M Supply Chain Manager interview questions

Applied via their online web-based Career section. Received e-mail confirmation of my application acceptance. The online system allows you access to where you stand in the application process as long as someone is properly monitoring on the company side. Was directly contacted by the hiring manager in a very short period of time, reviewed the opportunity and my qualifications, and was advised that they would get back with me (including coordinating an on campus in person interview) when they returned from an international trip-a week later. To date I have not heard a thing even after reaching out to them leaving a voice mail message reiterating my sincere interest and providing my contact info. The website info on my candidacy has not been updated either.