The annual issue by ENR ranks the 225 largest construction contracting firms from around the world. It also ranks the largest firms in a wide variety of market sectors and geographic markets: building, manufacturing, power, water, industrial/petroleum, transportation, hazardous waste, sewer/waste and telecommunications. ENR survey issues are used as reference tools throughout the industry. ENKA, ranking 47th on last year’ s list, has been raised to 44th on this year’s ENR list where companies are ranked according to construction revenue generated in 2006 in millions of USD.