The Graycor Companies, an ISO 9001-registered and Gold Shovel Standard certified general contractor, provides industrial and ... commercial construction services throughout North America. As an industry leader, Graycor commits to safe work environments, demands project excellence and rewards passion for performance. Established in 1921, Graycor functions under three major operating units - Graycor Industrial Constructors Inc., Graycor Construction Company Inc., and Graycor Southern Inc. read more