They would likely do it after the 2nd interview. It is all done on site.

Was the drug test after you accepted the offer? or was it before? I have already accepted offer had background/reference check, have not heard about drug test yet.

I had no clue what job I was applying for as it was through a personal contact, so I didn't know what I was going to be doing.

cool, im actually in halifax while going though the interview process. Were you in new brunswick while you were being interview?