(AGI) Rome, July 1 - Widespread infiltration by the Calabrian'Ndrangheta in procurement contracts in Piedmont has beenuncovered and dismantled by the Special Operations Group of theCarabinieri. Twenty people in Turin, Milan, Genoa and Catanzarowere arrested on Tuesday. The arrests came at the conclusion ofa Milan anti-mafia prosecutors' office investigation intomafia-type association, extortion, usury and illegaltrafficking of waste. The seizure of companies assets and goodsof a total value of 15 million euros was also ordered. . .