Investigations

On May 20, 2011, GCC Alliance Concrete, Incorporated (GCC), pled guilty in U.S. District Court, Sioux Falls, Iowa, to Sherman Antitrust Act charges for their role in a scheme to manipulate the ready-mix concrete market. 

GCC admitted that as early as January 2008 and continuing through August 2009, Steven Vanderbrake, sales manager, conspired with others to fix ready-mix concrete prices and/or submit non-competitive and rigged bids for ready-mix sold in Iowa.  Vanderbrake has pled guilty and was sentenced for his role in the antitrust conspiracy.  During the period of the conspiracy, GCC had ready-mix sales that exceeded $2 million. 

This investigation was conducted jointly with the FBI, the U.S. Attorney's Office-Antitrust Division, and the U.S. Department of Justice-Antitrust Division.