What position did Joe Greene primarily play?

What position did Jack Lambert primarily play? Jack Lambert is best known for playing with which NFL team? Which college was Jack Lambert playing for when he entered the NFL? What jersey number did Jack Lambert wear with the Steelers? Joe Greene is best known for playing with which NFL team? Which college was Joe Greene playing for when he entered the NFL? What jersey number did Joe Greene wear with the Steelers? What position did Bruce Smith primarily play?