The Weir Group PLC is engaged in engineering businesses. It operates in three segments: Minerals, Oil and Gas, and Power and Industrial. The Minerals segment provides slurry handling equipment and associated aftermarket support for abrasive high wear applications used in the mining and oil sands markets. The Oil & Gas segment provides products and service solutions to upstream, production, transportation, refining and related industries. The Power & Industrial segment designs and manufactures valves, pumps and turbines as well as providing specialist support services to the global power generation, industrial and oil and gas sectors. The Company�s subsidiaries include American Hydro Corporation, EnviroTech Pumpsystems Inc, Gema Industrigummi AB, Linatex Rubber Products Sdn Bhd and Mesa Manufacturing Inc.