I had 3 separate interviews before getting hired on for the position. Each time I met with someone new. Each interview was about 30 mins long with a series of questions

it was for an entry level position and the need for employees so that interview was fairly easy. few basic questions like how you found the job, how much you would like to get payed, whats your availability etc. Finished the interview and got the job right then, but then they asked me to get drug tested within the next two weeks. Found out later that maybe 3/4 of the employees hired after me were never asked to get a drug test. All in all a very easy interview.