I applied online. The process took 3 months. I interviewed at 3M (Cynthiana, KY) in Apr 2015
Interview
Take an assessment test. A mechanical and comprehensive. Based on the outcome,of the test will determine if you get an interview or not. I took the test yesterday (4/08), in was nnotified the following day that I had passed the exam. Got an in person interview on 4/08.