Hi guys. I am an apprentice with a question that I have received varying answers. Do metal junction boxes require a grounding screw with pigtail? Several Journeymen have stated that if you run metal conduit, the conduit is considered grounded, thus a ground screw in every j-box is not required (the same answer applies if you're running MC cable). However, 1 guy (the one who I first started with says they are required). I spent 20 years in the US Navy onboard Nuclear Submarines. The manuals for operating a nuclear power plant are not as confusing as the NEC 2002. I do not know if a definitive answer is a viable option but anything would help, especially a code reference. Thanks guys.