I applied in-person. The process took 2 months. I interviewed at Peñoles (Torreón, Coahuila) in Apr 2012
Interview
Long and painful.... lot of tests were applied (physichological, skills, medical, Etc..) , I waited for 2 months just to hear from them, but already inside I noticed that it depends a lot in the company's need of hiring so it can be really fast... sometime in a matter of weeks