South Korea's antitrust watchdog on Thursday fined 21 construction companies a combined 132.2 billion won (US$125.9 million) for collusion in the bidding process for a large-scale subway construction project. Those subject to the fine include big name builders such as Hyundai E&C, Hyundai Development Company, POSCO E&C, GS E&C, SK E&C and Daewoo E&C, according to the Fair Trade Commission (FTC)